Station Overview Station Location
Station Number CO-BO-269 Latitude 40.104965
Station Name Niwot 0.7 NNW Longitude -105.160656
County Boulder Elevation (ft) 5076



Month 30 Yr Avg by PRISM Total Prcp Sum Days Covered By All Observations Daily Prcp Sum Daily Observation Count Multiday Prcp Sum Days Covered by Multiday Observations Multiday Observation Count Days With Prcp Days With Trace Total Snowfall Days With Snowfall Days With Snow On Ground
Oct 10 1.02 1.10 31 1.10 31 0.00 0 0 8 0 0.0 0 0
Nov 10 0.82 0.45 30 0.45 24 0.00 6 1 3 3 0.9 1 1
Dec 10 0.58 0.29 31 0.29 31 0.00 0 0 1 1 4.8 1 1
Jan 11 0.43 0.26 31 0.26 31 0.00 0 0 3 4 5.1 3 7
Feb 11 0.50 0.65 28 0.65 28 0.00 0 0 5 2 9.0 5 13
March 11 1.54 0.17 30 0.17 30 0.00 0 0 3 2 0.7 1 1
April 11 1.84 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 11 2.31 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 11 1.80 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 11 1.32 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 11 1.39 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 11 1.45 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 15.00" 2.92" 181 days 2.92" 175 0.00" 6 days 1 23 days 12 days 20.5" 11 days 23 days



Days in Water Year Cell Color Key
        Daily Observation with Prcp         Missing Day
        Multiday Observation         Daily/Multiday Observation Conflict

Day of Year Daily Prcp Multiday Prcp
10/1/2010 0.00
10/2/2010 0.00
10/3/2010 0.00
10/4/2010 0.00
10/5/2010 0.00
10/6/2010 0.00
10/7/2010 0.40
10/8/2010 0.01
10/9/2010 0.00
10/10/2010 0.00
10/11/2010 0.10
10/12/2010 0.09
10/13/2010 0.33
10/14/2010 0.00
10/15/2010 0.00
10/16/2010 0.00
10/17/2010 0.00
10/18/2010 0.00
10/19/2010 0.10
10/20/2010 0.00
10/21/2010 0.00
10/22/2010 0.00
10/23/2010 0.06
10/24/2010 0.00
10/25/2010 0.00
10/26/2010 0.00
10/27/2010 0.00
10/28/2010 0.00
10/29/2010 0.00
10/30/2010 0.00
10/31/2010 0.01
11/1/2010 0.11
11/2/2010 0.00
11/3/2010 0.00
11/4/2010 0.00
11/5/2010 0.00
11/6/2010 0.00
11/7/2010 0.00
11/8/2010 0.00
11/9/2010 0.00
11/10/2010 0.27
11/11/2010 0.07
11/12/2010 0.00
11/13/2010 0.00
11/14/2010 T
11/15/2010 T
11/16/2010 0.00
11/17/2010 0.00
11/18/2010 0.00
11/19/2010 0.00
11/20/2010 0.00
11/21/2010 0.00
11/22/2010 T
11/23/2010 0.00
11/24/2010 **
11/25/2010 **
11/26/2010 **
11/27/2010 **
11/28/2010 **
11/29/2010 0.00
11/30/2010 0.00
12/1/2010 0.00
12/2/2010 0.00
12/3/2010 0.00
12/4/2010 0.00
12/5/2010 0.00
12/6/2010 0.00
12/7/2010 0.00
12/8/2010 0.00
12/9/2010 0.00
12/10/2010 0.00
12/11/2010 0.00
12/12/2010 0.00
12/13/2010 0.00
12/14/2010 0.00
12/15/2010 0.00
12/16/2010 0.00
12/17/2010 T
12/18/2010 0.00
12/19/2010 0.00
12/20/2010 0.00
12/21/2010 0.00
12/22/2010 0.00
12/23/2010 0.00
12/24/2010 0.00
12/25/2010 0.00
12/26/2010 0.00
12/27/2010 0.00
12/28/2010 0.00
12/29/2010 0.00
12/30/2010 0.00
12/31/2010 0.29
Day of YearDaily PrcpMultiday Prcp
1/1/2011 0.01
1/2/2011 0.00
1/3/2011 0.00
1/4/2011 0.00
1/5/2011 0.00
1/6/2011 0.00
1/7/2011 0.00
1/8/2011 0.00
1/9/2011 T
1/10/2011 0.23
1/11/2011 0.00
1/12/2011 0.00
1/13/2011 0.00
1/14/2011 0.00
1/15/2011 0.00
1/16/2011 0.00
1/17/2011 T
1/18/2011 0.00
1/19/2011 0.00
1/20/2011 0.02
1/21/2011 0.00
1/22/2011 0.00
1/23/2011 0.00
1/24/2011 0.00
1/25/2011 0.00
1/26/2011 T
1/27/2011 0.00
1/28/2011 0.00
1/29/2011 0.00
1/30/2011 0.00
1/31/2011 T
2/1/2011 0.10
2/2/2011 0.00
2/3/2011 0.00
2/4/2011 T
2/5/2011 0.00
2/6/2011 0.32
2/7/2011 0.00
2/8/2011 0.09
2/9/2011 0.08
2/10/2011 0.00
2/11/2011 0.00
2/12/2011 0.00
2/13/2011 0.00
2/14/2011 0.00
2/15/2011 0.00
2/16/2011 0.00
2/17/2011 0.00
2/18/2011 0.00
2/19/2011 0.00
2/20/2011 0.00
2/21/2011 0.00
2/22/2011 0.00
2/23/2011 0.00
2/24/2011 0.00
2/25/2011 0.06
2/26/2011 T
2/27/2011 0.00
2/28/2011 0.00
3/1/2011 0.00
3/2/2011 0.00
3/3/2011 0.00
3/4/2011 0.00
3/5/2011 0.00
3/6/2011 0.00
3/7/2011 T
3/8/2011 T
3/9/2011 0.00
3/10/2011 0.00
3/11/2011 0.00
3/12/2011 0.00
3/13/2011 0.02
3/14/2011 0.00
3/15/2011 0.00
3/16/2011 0.00
3/17/2011 0.00
3/18/2011 0.06
3/19/2011 0.00
3/20/2011 0.00
3/21/2011 0.00
3/22/2011
3/23/2011 0.00
3/24/2011 0.00
3/25/2011 0.00
3/26/2011 0.00
3/27/2011 0.00
3/28/2011 0.00
3/29/2011 0.09
3/30/2011 0.00
3/31/2011 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2011
4/2/2011
4/3/2011
4/4/2011
4/5/2011
4/6/2011
4/7/2011
4/8/2011
4/9/2011
4/10/2011
4/11/2011
4/12/2011
4/13/2011
4/14/2011
4/15/2011
4/16/2011
4/17/2011
4/18/2011
4/19/2011
4/20/2011
4/21/2011
4/22/2011
4/23/2011
4/24/2011
4/25/2011
4/26/2011
4/27/2011
4/28/2011
4/29/2011
4/30/2011
5/1/2011
5/2/2011
5/3/2011
5/4/2011
5/5/2011
5/6/2011
5/7/2011
5/8/2011
5/9/2011
5/10/2011
5/11/2011
5/12/2011
5/13/2011
5/14/2011
5/15/2011
5/16/2011
5/17/2011
5/18/2011
5/19/2011
5/20/2011
5/21/2011
5/22/2011
5/23/2011
5/24/2011
5/25/2011
5/26/2011
5/27/2011
5/28/2011
5/29/2011
5/30/2011
5/31/2011
6/1/2011
6/2/2011
6/3/2011
6/4/2011
6/5/2011
6/6/2011
6/7/2011
6/8/2011
6/9/2011
6/10/2011
6/11/2011
6/12/2011
6/13/2011
6/14/2011
6/15/2011
6/16/2011
6/17/2011
6/18/2011
6/19/2011
6/20/2011
6/21/2011
6/22/2011
6/23/2011
6/24/2011
6/25/2011
6/26/2011
6/27/2011
6/28/2011
6/29/2011
6/30/2011
Day of YearDaily PrcpMultiday Prcp
7/1/2011
7/2/2011
7/3/2011
7/4/2011
7/5/2011
7/6/2011
7/7/2011
7/8/2011
7/9/2011
7/10/2011
7/11/2011
7/12/2011
7/13/2011
7/14/2011
7/15/2011
7/16/2011
7/17/2011
7/18/2011
7/19/2011
7/20/2011
7/21/2011
7/22/2011
7/23/2011
7/24/2011
7/25/2011
7/26/2011
7/27/2011
7/28/2011
7/29/2011
7/30/2011
7/31/2011
8/1/2011
8/2/2011
8/3/2011
8/4/2011
8/5/2011
8/6/2011
8/7/2011
8/8/2011
8/9/2011
8/10/2011
8/11/2011
8/12/2011
8/13/2011
8/14/2011
8/15/2011
8/16/2011
8/17/2011
8/18/2011
8/19/2011
8/20/2011
8/21/2011
8/22/2011
8/23/2011
8/24/2011
8/25/2011
8/26/2011
8/27/2011
8/28/2011
8/29/2011
8/30/2011
8/31/2011
9/1/2011
9/2/2011
9/3/2011
9/4/2011
9/5/2011
9/6/2011
9/7/2011
9/8/2011
9/9/2011
9/10/2011
9/11/2011
9/12/2011
9/13/2011
9/14/2011
9/15/2011
9/16/2011
9/17/2011
9/18/2011
9/19/2011
9/20/2011
9/21/2011
9/22/2011
9/23/2011
9/24/2011
9/25/2011
9/26/2011
9/27/2011
9/28/2011
9/29/2011
9/30/2011



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2010 7:00 AM 0.00 0.0 M M M ENE winds calm. Skies clear with moderate dew. Temps: Hi-78.1°F Lo-41.9°F Current-41.9°F
10/2/2010 7:00 AM 0.00 0.0 M M M NNE winds calm. Skies clear with moderate dew. Temps: Hi-83.5°F Lo-42.1°F Current-42.1°F In September there was precipitation on only four days totaling 0.11 inches
10/3/2010 7:00 AM 0.00 0.0 M M M WNW winds calm. Skies clear with a sliver of a waning moon. Heavy dew. Temps: Hi-71.8°F Lo-38.7°F Current-38.7°F
10/4/2010 7:00 AM 0.00 0.0 M M M By 10 AM yesterday, broken clouds filled the sky. No rain! Today NW winds calm. Scattered clouds. Moderate dew. Temps: Hi-81.0°F Lo-41.5°F Current-42.1°F
10/5/2010 7:00 AM 0.00 0.0 M M M Yesterday storm clouds came through about 4:00 PM but no rain. This AM, SW winds calm, skies clear with light dew. Temps: Hi-81.0°F LO-42.1°F Current-43.9°F
10/6/2010 7:00 AM 0.00 0.0 M M M NNW light air. Heavy cloud cover. Still dry. Temps: Hi-85.3°F Lo-43.9°F Current-59.0°F
10/7/2010 7:00 AM 0.40 M M M M Brief but noisy thunderstorm at 12:35 AM. Wonderful rain! At observation time SSW wind calm. A few scattered clouds - heavier on the NE horizon. Temps: Hi-70.0°F Lo-48.0°F Current-48.0°F
10/8/2010 7:00 AM 0.01 M M M M W wind calm. Overcast skies with a beautiful pink sunrise. Temps: Hi-81.8°F Lo-47.5°F Current-56.7°F
10/9/2010 7:00 AM 0.00 0.0 M M M WSW winds calm and dry. Scattered clouds to the south. Temps: Hi-78.1°F Lo-42.8°F Current-42.8°F
10/10/2010 7:00 AM 0.00 0.0 M M M S wind breezy yesterday. This AM SW wind calm and dry. Overcast skies clearing in the SW. Temps: Hi- 78.1°F Lo-42.3°F Current-48.9°F
10/11/2010 7:00 AM 0.10 M M M M Light showers off and on all day yesterday. This AM WSW winds calm. Skies clear with only a few small scattered clouds. Temps: Hi-62.1°F Lo-44.8°F Current-44.8°F
10/12/2010 7:00 AM 0.09 M M M M Raining lightly at observation time with 0.09" accumulated. Overcast skies. N winds calm. Temps: Hi= 73.0°F Lo-44.1°F Current-47.7°F
10/13/2010 7:00 AM 0.33 M M M M Rain stopped at 0.33" mid-morning with clearing skies. This AM WSW winds calm with heavy dew. Skies clear except for a low band of clouds in the east. Temps: Hi-65.5°F Lo-36.5°F Current-36.5°F
10/14/2010 6:45 AM 0.00 0.0 M M M W winds calm with moderate dew. Skies clear except for thin clouds low in the SW. Temps: Hi-69.3°F Lo-36.5°F Current-36.9°F
10/15/2010 7:00 AM 0.00 0.0 M M M WNW winds calm. Skies clear with moderate dew. Temps: Hi-79.3°F Lo-36.5°F Current-37.2°F
10/16/2010 7:00 AM 0.00 0.0 M M M NW winds calm and dry. High,thin scattered clouds. Temps: H-82.2°F Lo-37.0°F Current-38.8°F
10/17/2010 7:00 AM 0.00 0.0 M M M "The autumn leaves drift by my window..." W wind calm. Skies clear with moderate dew. Temps: Hi-68.9°F Lo-36.1°F Current-36.1°F
10/18/2010 7:00 AM 0.00 0.0 M M M A few scattered rain drops about 5 PM. Dry this AM. NW winds calm. Scattered clouds. Temps: Hi-82.8°F Lo-36.5°F Current-40.3°F
10/19/2010 7:00 AM 0.10 M M M M Light rain from 4:00 to 8:00 PM yesterday. This AM NW winds calm with our first frost. A few scattered clouds on the horizons. Temps: Hi-64.2°F Lo-35.1°F Current-35.1°F
10/20/2010 7:00 AM 0.00 0.0 M M M NNW winds calm. Skies clear with light dew. Temps: Hi-72.0°F Lo-34.7°F Current-35.2°F
10/21/2010 7:00 AM 0.00 0.0 M M M N winds calm. Beautiful sunrise coloring scattered clouds on the SW horizon. Otherwise skies clear. Light dew. Temps: Hi-77.4°F Lo-34.9°F Current-34.9°F
10/22/2010 7:00 AM 0.00 0.0 M M M N winds calm and dry. Scattered cloud cover. Temps: Hi-76.1°F Lo-34.9°F Current-43.5°F
10/23/2010 7:00 AM 0.06 M M M M Brief showers began about 11 AM and continued off and on all day and into the night. This AM there is broken cloud cover with NW winds calm. Temps: Hi-63.3°F Lo-43.5°F Current-46.8°F
10/24/2010 7:00 AM 0.00 0.0 M M M Very light west breeze. Skies clear with moderate dew. Beautiful Hunter moon. Temps: Hi-68.4°F Lo-38.5°F Current-38.5°F
10/25/2010 7:00 AM 0.00 0.0 M M M Erratic winds sent leaves flying yesterday. SW warm, light air this AM. Skies clear and dry with low clouds on the SW horizon. Temps: Hi-68.4°F LO-38.1°F Current-57.7°F
10/26/2010 7:00 AM 0.00 0.0 M M M Couds came up with high winds soon after yesterday's report. Dry, very windy and cold most of yesterday and in to this morning's hours. Our yard is filled with leaves and small branches. This AM winds have dropped to a light breeze from the SW. Still dry. Skies are clear. Temps: Hi-68.4°F Lo-38.1°F Current-38.7°F
10/27/2010 7:00 AM 0.00 0.0 M M M Very windy yesterday and relatively cold. This AM skies clear and dry. SSW breeze. Temps: Hi-55.6°F Lo-31.5°F Current-36.0°F
10/28/2010 6:45 AM 0.00 0.0 M M M SW winds calm. Skies mostly clear with a very few scattered clouds. Light frost. Temps: Hi-57.2°F Lo-20.5°F Current-20.5°F
10/29/2010 7:00 AM 0.00 0.0 M M M SSW winds calm and dry. Thin scattered clouds reflecting a beautiful sunrise. Temps: Hi-64.2°F Lo-32.5°F Current-33.3°F
10/30/2010 7:45 AM 0.00 0.0 M M M Overslept! SSW winds calm and dry. Scattered clouds. Temps: Hi-81.1°F Lo-33.4°F Current-39.7°F
10/31/2010 7:00 AM 0.01 0.0 M M M Rain fell during the night. This AM NNW winds calm. Light dew. Scattered clouds. Temps: Hi-77.0°F Lo-37.8°F Current-37.8°F
11/1/2010 7:00 AM 0.11 M M M M Rain during the early morning hours. SSW winds calm. Broken cloud cover. Temps: Hi-68.2°F Lo-37.6°F Current-42.8°F
11/2/2010 7:00 AM 0.00 0.0 M M M SW winds calm. Clear skies with a sliver of a waning moon. Light frost. Temps: Hi-66.7°F Lo-31.3°F Current-31.6°F
11/3/2010 7:00 AM 0.00 0.0 M M M After a beautiful day yesterday, this morning West winds are calm. Skies clear with light dew. Temps: Hi-72.5 Lo-32.0 Current-38.3
11/4/2010 7:00 AM 0.00 0.0 M M M WNW winds calm. Light frost. Thin scattered clouds. Temps: Hi-66.4°F Lo-29.5°F Current-29.5°F
11/5/2010 7:00 AM 0.00 0.0 M M M S winds calm. Skies clear and dry. Temps: Hi-na Lo-32.0°F Current-4.5°F
11/6/2010 7:00 AM 0.00 0.0 M M M S winds calm and dry. High scattered clouds. Temps: Hi-73.9°F Lo-27.9°F Current-32.9°F
11/7/2010 7:00 AM 0.00 0.0 M M M Oh, that wonderful light!! S winds calm and dry. High fog-like clouds. Temps: Hi-78.8°F Lo-32.7°F Current-38.7°F
11/8/2010 7:00 AM 0.00 0.0 M M M W winds calm and dry. Scattered clouds. Temps: Hi-74.5°F Lo-31.8°F Current-32.9°F
11/9/2010 7:00 AM 0.00 0.0 M M M W winds calm and dry. Skies clear except for clouds on the Eastern horizon. Temps: Hi-69.8° Lo-33.3°F Current-33.4°F
11/10/2010 7:00 AM 0.27 M M M M Rain about 11 AM turning to brief snow at 3:00 PM. This AM WSW winds calm. Light fog. Heavy frost. Temps: Hi-54.3°F Lo-26.8°F Current-32.9°F
11/11/2010 7:00 AM 0.07 0.9 0.07 0.9 0.07 It's snowing lightly. NW winds calm. Overcast skies. Temps: Hi-54.3°F Lo-26.8°F Current-32.9°F
11/12/2010 7:00 AM 0.00 0.0 M M M Yeserday's snow is gone. Heavy frost outlining every fallen leaf. N winds calm. Skies clear. Temps: Hi-37.4°F Lo-20.1°F Current-20.3°F
11/13/2010 7:00 AM 0.00 0.0 0.00 M M E winds calm. Skies mostly clear with scattered clouds on the SW horizon. Moderate frost. Temps: Hi-49.3°F Lo-20.3°F Current-24.1°F
11/14/2010 7:00 AM T T M M M Interesting ice crystals on all surfaces but not enough to measure. SSW winds calm. Skies clear except for an occasional scattered cloud. Temps: Hi-48.6°F Lo-24.4°F Current-26.8°F
11/15/2010 7:00 AM T T 0.00 M M Yesterday's ice crystals melted. Less than a tenth of an inch of new snow started about 4:00 AM this morning. Skies overcast with an occasional snow flake. SW winds calm. Temps: Hi-48.2°F Lo-27.0°F Current-33.1°F
11/16/2010 7:00 AM 0.00 0.0 0.00 M M WSW winds calm. Broken clouds. Light frost. Temps: Hi-50.4°F Lo-25.2°F Current-30.7°F
11/17/2010 7:00 AM 0.00 0.0 M M M A very brief mixed rain and snow storm passed through about 3 PM. Nothing in the gauge. N wind calm and dry. Skies clear. Temps: Hi-60.3°F Lo-27.1°F Current-27.1°F
11/18/2010 7:00 AM 0.00 0.0 M M M S winds calm. Light frost. Scattered clouds. Temps: Hi-46.2°F Lo-24.1°F Current-25.5°F
11/19/2010 7:00 AM 0.00 0.0 M M M WSW winds calm. Cloudy, clearing in the West. Very dry. Temps: Hi- 62.8 Lo-25.9 Current-38.5
11/20/2010 7:00 AM 0.00 0.0 M M M E winds calm. High fog. Dry. Temps: Hi-63.7°F Lo-26.6°F Current-32.5°F
11/21/2010 7:00 AM 0.00 0.0 M M M WSW winds calm. Skies clear except for beautiful pink clouds on the western horizon. Moderate frost. Temps: Hi-45.3°F Lo-23.7°F Current-27.5°F
11/22/2010 7:00 AM T T M M M S winds calm. Skies clear. Trace of snow which fell about 10 PM last night. Temps: Hi-47.1°F Lo-23.0°F Current-28.8°F
11/23/2010 7:00 AM 0.00 0.0 M M M WNW winds calm. Skies clear with light frost. Temps: Hi-50.4°F Lo-18.3°F Current-18.7°F
11/30/2010 7:00 AM 0.00 0.0 M M M SSW wind to 3 mph. Skies clear and dry. Temps: Hi-37.4°F Lo-20.3°F Current-21.2°F
12/1/2010 7:00 AM 0.00 0.0 M M M NNW winds to 8.1 mph. Broken clouds with beautiful sunrise. Dry, we will need to water the yard. Temps: Hi-44.6°F Lo-21.7°F Current-44.6°F
12/2/2010 7:00 AM 0.00 0.0 M M M NW winds calm and dry. Scattered clouds reflecting a beautiful pink sunrise. Temps: Hi-63.0° Lo-38.7°F Current-38.7°F
12/3/2010 7:00 AM 0.00 0.0 M M M NW winds to 16 mph. Very dry. Broken cloud cover. Temps: Hi-56.7°F Lo-29.5°F Current-53.1°F
12/4/2010 7:00 AM 0.00 0.0 M M M Windy yesterday. This AM S winds calm. Skies overcast. Very dry. Temps: not available.
12/5/2010 8:00 AM 0.00 0.0 M M M S winds calm. Broken clouds. Very dry. Temps: Hi-62.8°F Lo-26.6°F Current-(10:30 AM) 34.2°F
12/6/2010 7:00 AM 0.00 0.0 M M M S winds calm. Light frost. Broken clouds with a brilliant red/orange sunrise. Temps: Hi-43.0°F Lo-20.1°F Current-22.6°F
12/7/2010 7:00 AM 0.00 0.0 M M M S winds calm. Overcast skies, broken on the eastern horizon. Dry. Temps: Hi-49.1°F Lo-22.6°F Current-28.0°F
12/8/2010 7:00 AM 0.00 0.0 M M M S winds calm. Widely scattered clouds. Dry with very light frost. Temps: Hi-56.7°F Lo-19.4°F Current-20.1°F
12/9/2010 6:45 AM 0.00 0.0 M M M Windy during the night. This AM widely scattered clouds. SW winds calm. Temps: Hi-53.1°F Lo-19.9°F Current- 48.6°F Unusually mild and very dry.
12/10/2010 7:00 AM 0.00 0.0 M M M SW winds calm. Broken clouds reflecting a beautiful sunrise. Very dry. Temps: Hi-60.4°F Lo-30.0°F Current-30.6°F
12/11/2010 7:00 AM 0.00 0.0 M M M Few drops of rain about 9:30 PM last night. Not enough to even call a trace. SSW winds calm. Skies clear except for a few scattered clouds low in the SW. Very light frost. Temps: Hi-60.4°F Lo-22.5°F Current-22.5°F.
12/12/2010 7:00 AM 0.00 0.0 M M M Cold, dry wind yesterday. NNE winds calm this AM. Scattered clouds. Very light frost. Temps: Hi-48.0°F Lo-19.8°F Current-19.8°F
12/13/2010 7:00 AM 0.00 0.0 M M M Strong, dry winds yesterday. SSW very light winds this AM. Scattered clouds. Temps: Hi-54.0°F Lo-NA Current-49.5°F
12/14/2010 7:00 AM 0.00 0.0 M M M W winds calm and dry. Scattered clouds. Current temperature is 35°F
12/15/2010 7:00 AM 0.00 0.0 M M M ENE winds calm. Continues VERY dry. Scattered clouds. Temps: Hi-61.9°F Lo-34.7°F Current-34.7°F
12/16/2010 7:00 AM 0.00 0.0 M M M SW winds calm. A very brief rain shower about 4 PM yesterday leaving not even a trace. Light frost this AM. Widely scattered clouds. Temps: Hi-54.9°F Lo-20.7°F Current-22.3°F. What happened to the snow?
12/17/2010 7:00 AM T T M M M Trace of snow with a few small snow flakes falling. Overcast skies SSE winds calm. Temps: Hi-40.6°F Lo-21.9°F Current- 23.0°F
12/18/2010 7:00 AM 0.00 0.0 M M M Light snow continued to fall into the early afternoon, melting as it hit the ground. This AM heavy frost. Widely scattered clouds SSE winds calm. Temps: Hi-31.6°F Lo-14.9°F Current-16.0°F
12/19/2010 7:00 AM 0.00 0.0 M M M NW winds calm. Light scattered clouds. Light frost. Temps: Hi-41.4°F Lo-16.0°F Current-20.1°F
12/20/2010 7:00 AM 0.00 0.0 M M M W wind calm. Very dry. Broken cloud cover. Temps: Hi-55.8°F Lo-20.1°F Current-37.4°F
12/21/2010 7:00 AM 0.00 0.0 M M M SE winds calm. Skies clear except for clouds on the SW horizon. Everything is very dry. Temps: Hi-55.2°F Lo-23.4°F Current-23.4°F. Received our beautiful calendar yesterday. Get yours!!
12/22/2010 7:00 AM 0.00 0.0 M M M Beautiful moon in the West. SSE winds calm. Skies clear. Light frost. Temper: Hi-40.6°F Lo-23.5°F Current-24.8°F
12/23/2010 6:45 AM 0.00 0.0 M M M SSE winds calm. Skies foggy with moderate frost. Temps: Hi-41.9°F Lo-21.6°F Current-24.1°F
12/24/2010 7:00 AM 0.00 0.0 M M M SE winds calm. Clear skies. Moderate frost. Temps: Hi-41.6°F Lo-22.8°F Current-22.8°F
12/25/2010 7:00 AM 0.00 0.0 M M M HAPPY HOLIDAYS, EVERYONE!! SSE winds calm. Clear skies with moderate frost. Temps: Hi-47.1°F Lo-17.8°F Current-17.8°F No rain or snow since November 11th.
12/26/2010 7:00 AM 0.00 0.0 M M M SSE wind calm. Skies clear with a little frost. Temps: Hi-52.0°F Lo-17.4°F Current-17.8°F
12/27/2010 7:00 AM 0.00 0.0 M M M W wind calm. Very Dry. Wierd heavy cloud cover but clear on all horizons. Temps: Hi-50.4°F Lo-17.8°F Current-24.6°F
12/28/2010 7:00 AM 0.00 0.0 M M M W wind calm. Broken cloud cover. Dry-no frost. Temps: Hi-50.4°F Lo-24.6°F Current-25.2°F
12/29/2010 7:00 AM 0.00 0.0 M M M W wind calm. Dry. Broken clouds lit by a brilliant red sunrise. Temps: Hi-49.8°F Lo-20.3°F Current-25.5°F
12/30/2010 7:00 AM 0.00 0.0 M M M SW wind calm. Skies overcast. Dry-dry-dry! Temps: Hi-57.2°F Lo-20.3°F Current-33.4°F
12/31/2010 7:00 AM 0.29 4.8 0.29 4.8 0.29 W wind calm. Snow began about 7:25 AM on Thursday and continued until about 4:30 AM this morning. Skies overcast. Temps: Hi-34.0°F Lo-7.9°F Current8.2°F
1/1/2011 7:00 AM 0.01 0.1 0.01 4.1 0.30 SSW wind calm. Skies overcast. Very fine snow stopped about noon yesterday. Temps: Hi-18.7°F Lo-6.1°F Current-7.0°F
1/2/2011 7:00 AM 0.00 0.0 0.00 3.7 0.30 NW winds calm. Broken cloud cover. Temps: Hi-20.8°F Lo-01.3°F Current-6.4°F
1/3/2011 7:00 AM 0.00 0.0 0.00 2.7 0.24 December precipitation: 0.29". W winds calm. Overhead skies clear. Clouds along the horizon. Temps: Hi-47.5°F Lo-6.4°F Current-11.5°F
1/4/2011 7:00 AM 0.00 0.0 0.00 2.6 0.18 SE winds calm. Clear and frosty. Temps: Hi-35.2°F Lo-5.7°F Current-6.6°F. Nocturnal critters have ruined my snow field.
1/5/2011 7:00 AM 0.00 0.0 0.00 M M WSW wind calm and dry. Broken clouds. Temps: Hi-35.8°F Lo-6.1°F Current-21.4°F. Some melting of the icy snow patches left in sheltered areas.
1/6/2011 6:45 AM 0.00 0.0 M M M SSW breezy and dry. Scattered clouds. Unmeasurable frozen snow in sheltered areas. Temps: Hi-45.9°F Lo-19.8°F Current-41.2°F
1/7/2011 7:00 AM 0.00 0.0 M M M W winds calm. Skies clear and dry. Temps: Hi-56.5°F Lo-34.3°F Current-34.5°F
1/8/2011 7:00 AM 0.00 0.0 M M M N winds calm. Skies clear. Moderate frost. Temps: Hi-43.9°F Lo-20.8°F Current-21.0°F
1/9/2011 7:00 AM T T M M M Very light snow - not enough to measure. Skies overcast with NE wind calm. Temps: Hi-45.7°F Lo-21.0°F Current-28.6°F
1/10/2011 7:00 AM 0.23 4.0 0.23 4.0 0.23 N winds calm. Overhead skies clear with heavy clouds on the SW horizon. Temps: Hi-33.4°F Lo-7.9°F Current-7.9°F
1/11/2011 7:00 AM 0.00 0.0 M 3.0 0.21 SSW winds calm. Skies clear with frost. Temps: Hi-25.0°F Lo-2.2°F Current-2.2°F
1/12/2011 7:00 AM 0.00 0.0 M M M N winds calm. Broken clouds with a beautiful sunrise. Frost. Temps: Hi-25.0°F Lo-minus2.6°F Current-0.5°F. Snow too ice to get core sample.
1/13/2011 7:00 AM 0.00 0.0 M M M SW breeze. Dry. Broken cloud cover. Temps: Hi-41.0°F Lo-0.5°F Current-40.3°F
1/14/2011 7:00 AM 0.00 0.0 M M M SSW winds calm. Skies clear overhead with scattered clouds on the S and E horizons. Patchy snow lingers in sheltered areas. Temps: Hi-54.1°F Lo-28.9°F Current-28.9°F
1/15/2011 7:00 AM 0.00 0.0 M M M W winds calm. Thin, broken cloud cover. Moderate frost. Temps: Hi-54.0°F Lo-25.0°F Current-26.2°F
1/16/2011 7:00 AM 0.00 0.0 M M M WNW winds calm. Thin, scattered cloud cover. Light frost. Patchy snow remains in sheltered areas. Temps: Hi-43.2°F Lo-24.1°F Current-24.3°F
1/17/2011 7:00 AM T 0.0 M M M Trace of rain - not enough to measure. W very light breeze. Heavy cloud cover, broken in the SE. Temps: Hi-52.2°F Lo-24.3°F Current-46.8°F
1/18/2011 7:00 AM 0.00 0.0 M M M SSW winds calm. Skies clear. Light frost. Temps: Hi-59.5°F Lo-29.1°F Current-29.1°F
1/19/2011 7:00 AM 0.00 0.0 M M M Very light breeze from the west. Broken cloud cover. Moderate frost. Temps: Hi-54.7°F Lo-27.0°F Current-27.0°F
1/20/2011 6:45 AM 0.02 1.0 0.02 1.0 0.02 Brief snow about 2 PM yesterday. This AM skies clear. SW winds calm. Temps: Hi-54.7°F Lo-11.1°F Current-11.3°F
1/21/2011 6:45 AM 0.00 0.0 M M M WSW winds calm. A few scattered clouds. Very dry. Temps: Hi-36.9°F Lo-10.9°F Current-30.7°F
1/22/2011 7:00 AM 0.00 0.0 M M M Strong winds from the west. Skies clear but the moon has a misty face. Temps: Hi-52.5°F Lo-29.7°F Current-41.9°F
1/23/2011 7:00 AM 0.00 0.0 M M M S winds calm. Clear skies. Light frost. Temps; Hi-50.0°F Lo-19.8°F Current-19.8°F
1/24/2011 7:00 AM 0.00 0.0 M M M NW breeze but dry. Broken cloud cover. Temps: Hi-47.3°F Lo-19.0°F Current-32.5°F
1/25/2011 7:00 AM 0.00 0.0 M M M SSW winds calm. Thin scattered clouds. Light frost. Temps: Hi-45.3°F Lo-13.5°F Current-13.6°F
1/26/2011 7:00 AM T T M M M SSW winds calm. Overcast skies. Not enough to measure the trace of snow on lawns. Melted on streets and sidewalks. Temps: Hi-45.5°F Lo-13.6°F Current-28.9°F
1/27/2011 7:00 AM 0.00 0.0 M M M SSW winds calm. Skies clear and dry except for thin scattered clouds in the SW. Yesterday's dusting of snow has melted. Temps: Hi-50.9°F Lo-28.4°F Current-28.4°F
1/28/2011 7:00 AM 0.00 0.0 M M M SW winds calm and dry. Skies clear except for some widely scattered thin clouds. Temps: Hi-60.3°F Lo-27.5°F Current-28.8°F
1/29/2011 7:00 AM 0.00 0.0 M M M NW winds calm and dry. Scattered clouds. Temps: Hi-66.0°F Lo-27.3°F Current-27.3°F
1/30/2011 7:00 AM 0.00 0.0 M M M SE winds calm. Overcast skies clearing in the SW. Moderate frost. Temps: Hi-60.3°F Lo-23.9°F Current-26.1°F
1/31/2011 7:00 AM T T M M M Freezing mist has coated everything with ice. Not enough to measure. Please be careful out there. NW wind calm. Overcast skies. Temps: Hi-43.7°F Lo-20.8°F Current-20.8°F
2/1/2011 7:00 AM 0.10 1.5 0.10 1.5 0.10 Snow began just AFTER 7AM observation yesterday. Snowed lightly off and on all day. This AM N winds calm. Skies overcast. Icy underfoot. Temps: Hi-17.2°F Lo-Minus 6.2°F Current-Minus 6.2°F
2/2/2011 7:00 AM 0.00 0.0 M 1.5 0.11 No new snow but temps too low to melt any. SW winds calm. Skies clear. Moderate frost. Temps: Hi-9.9°F Lo-minus 12.6°F Current-minus 11.0°F
2/3/2011 6:45 AM 0.00 0.0 M 1.5 0.06 WSW winds calm. Broken cloud cover. Temps so cold that the snow is not melting. Temps: Hi-14.0 L0-11.0 degrees below zero. Current-0.8 below zero
2/4/2011 7:00 AM T T M 2.0 0.09 WSW winds calm. Skies clear and frosty. Just a trace of new snow. Temps: Hi-37.8°F Lo-0.9 below zero Current-11.8°F
2/5/2011 7:00 AM 0.00 0.0 M M M SW winds calm and dry. Broken cloud cover. Patchy snow. Not enough for SWE measure. Temps: Hi-47.1°F Lo-11.8°F Current-30.9°F
2/6/2011 7:00 AM 0.32 4.0 0.32 4.0 0.32 What a beautiful snow-covered landscape! SW winds calm. Continuing to Snow from overcast skies. Temps: Hi-44.4°F Lo-27.1°F Current-27.1°F
2/7/2011 7:00 AM 0.00 0.0 M 2.0 0.30 No new snow but heavy frost. NNW winds calm. Scattered clouds. Temps: Hi-40.3° Lo-8.1° Current-12.0°F
2/8/2011 7:00 AM 0.09 1.5 0.09 3.5 0.39 1.5" new snow. Still snowing lightly. N winds calm with overcast skies. Temps: Hi-46.2°F Lo-7.0°F Current-7.0°F
2/9/2011 7:00 AM 0.08 1.0 0.08 4.0 0.52 Another 1" of snow yesterday. This AM N winds calm. Gauge covered with frost. Skies clear. Temps: Hi-16.2 Lo-6.0 below zero. Current-6.2 below zero.
2/10/2011 7:00 AM 0.00 0.0 M 3.5 0.42 No new snow. S winds calm. Skies clear with moderate frost. Temps: Hi-27.0° Lo-4.4°F Current-4.8°F
2/11/2011 7:00 AM 0.00 0.0 M 3.5 0.47 SSE winds calm. Skies clear with light frost. Snow is slow to melt. Temps: Hi-31.8°F Lo-4.3°F Current-8.4°F
2/12/2011 7:00 AM 0.00 0.0 M 3.0 0.56 Warm, dry wind came up during the night. Weathervane is swirling. Broken cloud cover. Temps Hi-na Lo-9.0°F Current-43.0°F
2/13/2011 7:00 AM 0.00 0.0 M M M Snow remains only where it has been shoveled in to piles. Breezy west winds. Scattered clouds. Temps: Hi-56.8°F Lo-35.2°F Current-51.3°F
2/14/2011 7:00 AM 0.00 0.0 M M M SSW winds calm and dry. Scattered clouds. Patchy snow only in very sheltered areas. Temps: Hi-64.6°F Lo-27.3°F Current-27.7°F
2/15/2011 7:00 AM 0.00 0.0 M M M NW very light, dry breeze. A few thin, scattered clouds. Temps: Hi-54.3°F Lo-NA Current-41.2°F
2/16/2011 7:00 AM 0.00 0.0 M M M Occasional SW light breeze. Skies clear and dry. Temps: Hi-31.1°F Lo-NA Current-31.1°F
2/17/2011 6:45 AM 0.00 0.0 M M M WSW winds calm and dry. Scattered clouds on the horizon. Temps: Hi-68.2°F Lo-34.9°F Current-41.7°F
2/18/2011 7:00 AM 0.00 0.0 M M M SSW winds calm and dry. Scattered clouds. Temps: Hi-52.3°F Lo-23.5°F Current-23.9°F
2/19/2011 7:00 AM 0.00 0.0 M M M N winds calm. Skies clear. Light frost. Temps: Hi-54.7°F Lo-23.5°F Current-24.4°F
2/20/2011 7:00 AM 0.00 0.0 M M M SSW winds breezy. Skies clear except for scattered clouds on the horizon. Temps: Hi-58.3°F Lo-24.8°F Cuurent-37.9°F
2/21/2011 7:00 AM 0.00 0.0 M M M NE winds calm. Overcast skies with light fog. Temps: Hi-51.6°F Lo-19.0°F Current-20.1°F
2/22/2011 7:00 AM 0.00 0.0 M M M S winds calm. Skies clear. Light frost. Temps: Hi-48.6°F Lo-17.2°F Current-18.1°F
2/23/2011 6:55 AM 0.00 0.0 M M M W winds calm and dry. Skies clear. Temps: Hi-55.8°F Lo-26.6°F Current-26.6°F
2/24/2011 6:45 AM 0.00 0.0 M M M W winds calm. Broken cloud cover. Very light frost. Temps: Hi-50.9°F Lo-23.2°F Current-24.4°F
2/25/2011 7:00 AM 0.06 1.0 0.06 1.0 0.06 First snow fell about 7:30 PM. NNW win calm. Overcast skies. Still a few flakes falling. Temp: Hi-45.0°F Lo-16.0°F Current-16.3°F
2/26/2011 7:00 AM T T M 1.0 0.09 Light snow continued in to yesterday afternoon but melted. NNW winds calm. Scattered clouds. Heavy frost. Temps: Hi-30.0°F Lo-16.3°F Current-18.3°F
2/27/2011 6:45 AM 0.00 0.0 M 0.0 M Snow has evaporated. SW very light breeze. Skies clear and dry. Temps: Hi-56.1°F Lo-18.3°F Current-37.8°F
2/28/2011 7:00 AM 0.00 0.0 M 0.0 M S winds calm. Scattered clouds. Moderate frost. Temps: Hi-52.5°F Lo-22.8°F current-23.5°F
3/1/2011 7:00 AM 0.00 0.0 M 0.0 M February precipitation: 0.65" SSW winds calm and dry. Overhead skies clear with clouds on the eastern horizon. Temps: Hi-62.4°F Lo-23.5°F Current-24.4°F
3/2/2011 7:00 AM 0.00 0.0 M 0.0 M E winds calm. Light frost. A few scattered clouds. Temps: Hi-62.6°F Lo-23.9°F Current-24.4°F
3/3/2011 6:45 AM 0.00 0.0 M 0.0 M ENE light breeze. Skies clear with clouds low on the western horizon. Very dry. Temps: Hi-55.6 Lo-24.4 Current-30.7
3/4/2011 7:00 AM 0.00 0.0 M 0.0 M Trace of rain during the night. SSE winds calm. Scattered clouds. Temps: Hi-64.8°F Lo-30.4°F Current-30.6°F
3/5/2011 7:00 AM 0.00 0.0 M 0.0 M S winds calm. Scattered clouds. Heavy frost. Temps: Hi-50.9°F Lo-18.0°F Current-18.5°F
3/6/2011 7:00 AM 0.00 0.0 M 0.0 M W winds calm and dry. Broken cloud cover. Temps: Hi-51.4°F Lo-18.5°F Current-29.5°F
3/7/2011 6:57 AM T 0.0 M 0.0 M ICY!! Trace of rain, grapele and ICE everywhere. Please be careful out there. N winds calm. Low overcast skies. Temps: Hi-54.0°F Lo-23.0°F Current-23.0°F
3/8/2011 7:00 AM T T M T M Just a trace of granualar snow. NNE winds calm. Skies low oevercast. Temps: Hi-26.6°F Lo-22.1°F Current-22.6°F
3/9/2011 7:00 AM 0.00 0.0 M 0.0 M SSW winds calm. Skies clear with a few scattered clouds on the SW horizon. Moderate frost. Temps: Hi-40.8°F Lo-21.9°F Current-23.0°F
3/10/2011 7:00 AM 0.00 0.0 M 0.0 M SW winds calm. Skies clear and dry. Temps: Hi-57.0°F Lo-26.1°F Current-30.2°F
3/11/2011 7:00 AM 0.00 0.0 M 0.0 M SSW winds very strong and gusty. Scattered light clouds. Very dry. Temps: Hi-70.0°F Lo-30.2°F Current-56.3°F
3/12/2011 7:00 AM 0.00 0.0 M 0.0 M S winds calm. Skies clear and dry. Tulips are showing first tips. Temps: Hi-70.9°F Lo-29.5°F Current-30.2°F
3/13/2011 7:00 AM 0.02 0.0 M 0.0 M Light rain during the night. N winds calm. Skies overcast. Temps: Hi-61.3°F Lo-30.2°F Current-39.9°F
3/14/2011 7:00 AM 0.00 0.0 M 0.0 M W winds calm and dry. Scattered clouds with a beautiful red sunrise. Temps: Hi-60.1°F Lo-25.7°F Current-25.7°F
3/15/2011 7:00 AM 0.00 0.0 M 0.0 M SW winds calm and dry. Scattered clouds. Temps: Hi-64.4 Lo-NA Current-37.8
3/16/2011 7:00 AM 0.00 0.0 M 0.0 M Breezy and dry S wind. Scattered clouds. Temps: Hi-60.1°F Lo-33.1°F Current-35.1°F
3/17/2011 6:45 AM 0.00 0.0 M 0.0 M Breezy WNW winds. Dry. Scattered clouds around the horizon. Temps: Hi-76.3°F Lo-44.1°F Current - 44.1°F
3/18/2011 7:00 AM 0.06 T 0.06 T M Light rain and snow mix. SSW winds calm. Scattered clouds. Temps: Hi-63.0°F Lo-34.9°F Current-35.1°F
3/19/2011 7:00 AM 0.00 0.0 M 0.0 M SSW winds calm. Skies clear with moderate frost. Temps: Hi-57.9°F Lo-30.2°F Current-30.2°F
3/20/2011 7:00 AM 0.00 0.0 M 0.0 M SW light breeze. High, thin mist but no frost. Temps: Hi-73.4°F Lo-27.3°F Current-45.9°F
3/21/2011 6:45 AM 0.00 0.0 M 0.0 M W winds calm and dry. Scattered clouds reflect a beautiful sunrise. Temps: Hi-68.2°F Lo-33.6°F Current-33.6°F
3/23/2011 7:00 AM 0.00 0.0 M 0.0 M SW winds dry and breezy. Very windy all day yesterday. Skies clear. Temps: Hi-56.5°F Lo-38.8°F Current-38.8°F
3/24/2011 6:45 AM 0.00 0.0 M 0.0 M S winds calm. Skies clear and dry. Brilliant waning moon. Temps: Hi-63.1°F Lo-26.8°F Current-26.8°F
3/25/2011 6:45 AM 0.00 0.0 M 0.0 M SSW winds calm. Skies clear and dry. Temps: Hi-51.4°F Lo-26.4°F Current-27.1°F
3/26/2011 7:00 AM 0.00 0.0 M 0.0 M NW winds a little breezey. Skies clear with moderate frost. Temps: Hi-59.0°F Lo-26.8°F Current-30.7°F
3/27/2011 7:00 AM 0.00 0.0 M 0.0 M SW winds calm and dry. Scattered clouds on the horizon. Temps: Hi-62.2°F Lo-30.7°F Current-32.0°F
3/28/2011 7:00 AM 0.00 0.0 M 0.0 M WNW winds calm and dry. Overcast skies. Temps: Hi-60.6°F Lo-32.0°F Current-35.2°F
3/29/2011 7:00 AM 0.09 0.7 0.09 0.7 0.09 Light snow after midnight. Overcast with fog. W winds calm. Temps: Hi-58.3°F Lo-28.9°F Current-28.9°F
3/30/2011 7:00 AM 0.00 0.0 M 0.0 M Snow all melted. ENE winds breezy. Overcast skies. Temps: Hi-52.2°F Lo-28.0°F Current-37.8°F
3/31/2011 6:30 AM 0.00 0.0 M 0.0 M SW winds calm. Skies clear and dry with broken clouds low on the horizon. Temps: Hi-59.9°F Lo-46.0°F Curren-48.7°F. Unless there's rain today, total precipitaion for March is 0.17". This is the last report from Niwot CO-BO-269. Thanks, it's been fun and educational. My best wishes to all you CoCorasins!



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
11/24/2010 11/29/2010 7:00 AM 6 0.00 0.0 0.00 Neighbors say there was no prescipitation while we were away. This AM N winds calm. Broken cloud cover. Light frost. Temps: Hi-52.9 Lo-23.7 Current-25.0



Observation Date Observation Time Notes Largest Stone Size Average Stone Size Smallest Stone Size Stone Consistency Duration Minutes Durration Accuracy Damage Timing More Rain than Hail Hail Started Largest Hail Started Angle of Impact Number of Stones on Pad Distance Between Stones on Pad Depth of Stones on Ground