Station Overview Station Location
Station Number CO-BO-306 Latitude 40.10444444
Station Name Niwot 0.9 NE Longitude -105.1438889
County Boulder Elevation (ft) 5141



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 13 1.02 0.74 23 0.48 9 0.26 14 3 3 0 1.1 1 1
Nov 13 0.85 0.12 25 0.12 5 0.00 20 3 1 0 0.0 0 0
Dec 13 0.58 0.07 8 0.02 3 0.05 5 1 1 0 0.0 0 0
Jan 14 0.42 0.60 16 0.34 7 0.26 9 2 3 0 0.0 0 0
Feb 14 0.50 0.25 6 0.25 6 0.00 0 0 3 0 0.0 0 0
March 14 1.55 0.75 31 0.12 19 0.63 12 3 3 0 0.0 0 0
April 14 1.85 1.14 31 0.02 9 1.12 22 6 1 0 0.0 0 0
May 14 2.33 2.16 15 0.35 3 1.81 12 4 1 0 0.0 0 0
June 14 1.79 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 14 1.32 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 14 1.37 0.41 4 0.41 1 0.00 3 0 1 0 0.0 0 0
Sept 14 1.45 1.86 30 0.95 5 0.91 25 9 5 0 0.0 0 0
Water Year Totals: 15.03" 8.10" 189 days 3.06" 67 5.04" 122 days 31 22 days 0 days 1.1" 1 days 1 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
10/1/2013 0.00
10/2/2013
10/3/2013 0.00
10/4/2013 **
10/5/2013 **
10/6/2013 **
10/7/2013 **
10/8/2013 **
10/9/2013 **
10/10/2013 **
10/11/2013 0.05
10/12/2013
10/13/2013
10/14/2013
10/15/2013
10/16/2013 0.02
10/17/2013
10/18/2013 0.26
10/19/2013 **
10/20/2013 **
10/21/2013 0.21
10/22/2013
10/23/2013 0.00
10/24/2013 0.00
10/25/2013 0.00
10/26/2013 **
10/27/2013 **
10/28/2013 0.00 0.00
10/29/2013
10/30/2013 0.20
10/31/2013
11/1/2013
11/2/2013 0.00 **
11/3/2013 0.00
11/4/2013
11/5/2013
11/6/2013
11/7/2013 0.00
11/8/2013
11/9/2013 **
11/10/2013 **
11/11/2013 **
11/12/2013 0.00
11/13/2013 0.00
11/14/2013
11/15/2013 0.00
11/16/2013 **
11/17/2013 **
11/18/2013 0.00
11/19/2013
11/20/2013 **
11/21/2013 0.12 **
11/22/2013 **
11/23/2013 **
11/24/2013 **
11/25/2013 **
11/26/2013 **
11/27/2013 **
11/28/2013 **
11/29/2013 **
11/30/2013 **
12/1/2013 **
12/2/2013 **
12/3/2013 0.05
12/4/2013
12/5/2013
12/6/2013 0.02
12/7/2013
12/8/2013
12/9/2013
12/10/2013 0.00
12/11/2013
12/12/2013
12/13/2013
12/14/2013
12/15/2013
12/16/2013 0.00
12/17/2013
12/18/2013
12/19/2013
12/20/2013
12/21/2013
12/22/2013
12/23/2013
12/24/2013
12/25/2013
12/26/2013
12/27/2013
12/28/2013
12/29/2013
12/30/2013 **
12/31/2013 **
Day of YearDaily PrcpMultiday Prcp
1/1/2014 **
1/2/2014 **
1/3/2014 **
1/4/2014 **
1/5/2014 **
1/6/2014 0.26
1/7/2014
1/8/2014 0.01
1/9/2014 0.00
1/10/2014
1/11/2014 **
1/12/2014 **
1/13/2014 0.00
1/14/2014
1/15/2014
1/16/2014
1/17/2014 0.00
1/18/2014
1/19/2014
1/20/2014
1/21/2014
1/22/2014 0.00
1/23/2014
1/24/2014
1/25/2014
1/26/2014
1/27/2014
1/28/2014
1/29/2014 0.01
1/30/2014 0.00
1/31/2014 0.32
2/1/2014
2/2/2014
2/3/2014
2/4/2014 0.15
2/5/2014
2/6/2014
2/7/2014
2/8/2014
2/9/2014
2/10/2014
2/11/2014
2/12/2014
2/13/2014
2/14/2014
2/15/2014
2/16/2014
2/17/2014
2/18/2014
2/19/2014
2/20/2014 0.00
2/21/2014
2/22/2014 0.00
2/23/2014
2/24/2014 0.04
2/25/2014 0.00
2/26/2014 0.06
2/27/2014
2/28/2014
3/1/2014 0.00
3/2/2014 0.00
3/3/2014 0.00
3/4/2014 0.00
3/5/2014 0.00
3/6/2014 M
3/7/2014 0.06
3/8/2014 **
3/9/2014 **
3/10/2014 0.54
3/11/2014 0.01
3/12/2014 0.00
3/13/2014 0.00
3/14/2014 0.00
3/15/2014 **
3/16/2014 **
3/17/2014 0.00 0.00
3/18/2014 0.00
3/19/2014 0.00
3/20/2014 0.00
3/21/2014 0.00
3/22/2014 **
3/23/2014 **
3/24/2014 0.09
3/25/2014 0.00
3/26/2014 0.00
3/27/2014 0.00
3/28/2014 0.05
3/29/2014 **
3/30/2014 **
3/31/2014 **
Day of YearDaily PrcpMultiday Prcp
4/1/2014 **
4/2/2014 **
4/3/2014 **
4/4/2014 **
4/5/2014 **
4/6/2014 **
4/7/2014 0.53
4/8/2014 0.02
4/9/2014 0.00
4/10/2014 0.00
4/11/2014 0.00
4/12/2014 **
4/13/2014 **
4/14/2014 0.30
4/15/2014 **
4/16/2014 0.00
4/17/2014 0.00
4/18/2014 0.00 **
4/19/2014 **
4/20/2014 **
4/21/2014 0.23
4/22/2014 0.00
4/23/2014 **
4/24/2014 0.06
4/25/2014 **
4/26/2014 **
4/27/2014 **
4/28/2014 0.00
4/29/2014 0.00
4/30/2014 0.00
5/1/2014 **
5/2/2014 0.05
5/3/2014 **
5/4/2014 **
5/5/2014 **
5/6/2014 0.04
5/7/2014
5/8/2014 0.35
5/9/2014
5/10/2014 0.00
5/11/2014 **
5/12/2014 **
5/13/2014 0.00 1.50
5/14/2014
5/15/2014
5/16/2014
5/17/2014 **
5/18/2014 **
5/19/2014 M 0.22
5/20/2014
5/21/2014
5/22/2014
5/23/2014
5/24/2014
5/25/2014
5/26/2014
5/27/2014
5/28/2014
5/29/2014
5/30/2014
5/31/2014
6/1/2014
6/2/2014
6/3/2014
6/4/2014
6/5/2014
6/6/2014
6/7/2014
6/8/2014
6/9/2014
6/10/2014
6/11/2014
6/12/2014
6/13/2014
6/14/2014
6/15/2014
6/16/2014
6/17/2014
6/18/2014
6/19/2014
6/20/2014
6/21/2014
6/22/2014
6/23/2014
6/24/2014
6/25/2014
6/26/2014
6/27/2014
6/28/2014
6/29/2014
6/30/2014
Day of YearDaily PrcpMultiday Prcp
7/1/2014
7/2/2014
7/3/2014
7/4/2014
7/5/2014
7/6/2014
7/7/2014
7/8/2014
7/9/2014
7/10/2014
7/11/2014
7/12/2014
7/13/2014
7/14/2014
7/15/2014
7/16/2014
7/17/2014
7/18/2014
7/19/2014
7/20/2014
7/21/2014
7/22/2014
7/23/2014
7/24/2014
7/25/2014
7/26/2014
7/27/2014
7/28/2014
7/29/2014
7/30/2014
7/31/2014
8/1/2014
8/2/2014
8/3/2014
8/4/2014
8/5/2014
8/6/2014
8/7/2014
8/8/2014
8/9/2014
8/10/2014
8/11/2014
8/12/2014
8/13/2014
8/14/2014
8/15/2014 0.41
8/16/2014
8/17/2014
8/18/2014
8/19/2014
8/20/2014
8/21/2014
8/22/2014
8/23/2014
8/24/2014
8/25/2014
8/26/2014
8/27/2014
8/28/2014
8/29/2014 **
8/30/2014 **
8/31/2014 **
9/1/2014 **
9/2/2014 0.13
9/3/2014 0.16
9/4/2014 0.02
9/5/2014 0.39
9/6/2014 **
9/7/2014 **
9/8/2014 0.05
9/9/2014 0.05
9/10/2014 0.33
9/11/2014 **
9/12/2014 0.21
9/13/2014 **
9/14/2014 **
9/15/2014 **
9/16/2014 0.01
9/17/2014 **
9/18/2014 0.00
9/19/2014 **
9/20/2014 **
9/21/2014 **
9/22/2014 0.00
9/23/2014 **
9/24/2014 0.03
9/25/2014 **
9/26/2014 0.01
9/27/2014 **
9/28/2014 **
9/29/2014 **
9/30/2014 0.47



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2013 7:20 AM 0.00 0.0 M M M Nada. No traces.
10/3/2013 7:00 AM 0.00 0.0 M M M Blue sky, few clouds the sun is shining!
10/16/2013 9:15 AM 0.02 M M M M bug in container.
10/18/2013 7:00 AM 0.26 1.1 0.26 1.1 0.26 snow
10/23/2013 7:00 AM 0.00 0.0 M M M
10/24/2013 7:00 AM 0.00 0.0 M M M
10/25/2013 7:00 AM 0.00 0.0 M M M Sunny and no clouds
10/28/2013 7:00 AM 0.00 0.0 M M M cold and overcast
10/30/2013 7:01 AM 0.20 M M M M Rained last night. Frozen on top. Very foggy.
11/2/2013 9:00 AM 0.00 0.0 M M M
11/7/2013 7:00 AM 0.00 0.0 M M M Trace. Mostly clear with few thin clouds. Slightly below freezing temperature. No wind.
11/13/2013 7:00 AM 0.00 0.0 M M M Clear, sunny, beautiful day outside, 37°
11/15/2013 7:00 AM 0.00 0.0 M M M No clouds in the sky and everything is dry other than where the grass was watered.
11/21/2013 7:00 AM 0.12 M M M M cold, overcast, still snowing
12/6/2013 7:30 AM 0.02 M M M M Cloudy skies, breezy and cold. Snow and ice on ground.
12/10/2013 7:00 AM 0.00 0.0 M M M High winds night before, outside of gauge covered in what appeared to be frost.
12/16/2013 11:30 AM 0.00 0.0 M M M
1/8/2014 1:25 PM 0.01 M M M M It was cold but sunny. The skies are blue!
1/9/2014 12:50 PM 0.00 0.0 M M M No rain was in the gauge
1/17/2014 7:00 AM 0.00 0.0 M M M No signs of any new precipitation. Rain gauge read 0.00 and was completely empty and dry.
1/22/2014 7:15 AM 0.00 0.0 M M M The gauge was empty with two mosquitos in it. It has been sunny the last few days.
1/29/2014 12:00 PM 0.01 M M M M Relatively clear skies, there was a sort of evaporation line as well at the .01 mark
1/30/2014 6:50 AM 0.00 0.0 M M M There was a dead mosquito in the bottom of the container
1/31/2014 11:00 AM 0.32 M M M M There is a lot of snow on the ground and piled on top of te gauge .
2/4/2014 7:00 AM 0.15 M M M M Cold, snow continues to fall.
2/20/2014 7:00 AM 0.00 0.0 M M M Mimi Fisher
2/22/2014 7:00 AM 0.00 0.0 M M M Very cold morning, clear skies
2/24/2014 7:00 AM 0.04 M M M M Foggy cloudy cold Nick breyer
2/25/2014 7:00 AM 0.00 0.0 M M M Mimi Fisher
2/26/2014 7:00 AM 0.06 M M M M Snow fall the night before and this morning there appeared to be snow frozen to the gauge. -Charlie mitelhaus (edit: daily precip initially recorded as 0.65". changed to NA as this appears to be a solid snow total. observer will be contacted. P.G.)
3/1/2014 7:00 AM 0.00 0.0 M M M
3/2/2014 7:00 AM 0.00 0.0 M M M
3/3/2014 7:00 AM 0.00 0.0 M M M
3/4/2014 7:00 AM 0.00 0.0 M M M
3/5/2014 7:00 AM 0.00 0.0 M M M
3/6/2014 9:00 AM M M M M M Julia R and Gabbi L Block 3 (edit: daily precip initially recorded as 0.36". changed to NA due to MDR suspicion. observer will be contacted. P.G.)
3/7/2014 8:30 AM 0.06 M M M M It is raining this morning -Clayton Robinson
3/11/2014 3:00 PM 0.01 M M M M There was a little precipitation due to the little amount of snow we had this morning and a little fly stuck at the bottom. - Chelsea P.
3/12/2014 12:00 AM 0.00 0.0 M M M No traces of water
3/13/2014 7:40 AM 0.00 0.0 M M M Completely dry. Onnika Hanson.
3/14/2014 7:30 AM 0.00 0.0 M M M There are no traces of water and no clouds in the sky.
3/17/2014 9:30 AM 0.00 0.0 M M M Partly cloudy, sun shining. Sarah McCaddon
3/18/2014 12:00 PM 0.00 0.0 M M M It is very windy with clouds.
3/19/2014 7:20 AM 0.00 0.0 M M M No water in guage, but there was a little bit of frost
3/20/2014 7:30 AM 0.00 0.0 M M M It is sunny; there are no clouds and slightly windy.
3/21/2014 7:25 AM 0.00 0.0 M M M No rainfall but grass was frosted
3/25/2014 7:45 AM 0.00 0.0 M M M Big dark cloud approaching and grass was frosted -Roberto Villalobos
3/26/2014 7:40 AM 0.00 0.0 M M M It is chilly, a few clouds, but the sun is out.
3/27/2014 7:30 AM 0.00 0.0 M M M Fog in the gauge
3/28/2014 7:30 AM 0.05 M M M M Sun's out and not a cloud in the sky
4/8/2014 7:50 AM 0.02 M M M M There are no clouds and the sun is out.
4/9/2014 10:07 AM 0.00 0.0 M M M Warm outside but cloudy -Alex, Roberto
4/10/2014 7:30 AM 0.00 0.0 M M M It is chilly out but there are no traces of water and no clouds.
4/11/2014 7:20 AM 0.00 0.0 M M M Completely dry. Onnika Hanson
4/17/2014 7:37 AM 0.00 0.0 M M M No clouds but chilly -Alex, Roberto
4/18/2014 7:50 AM 0.00 0.0 M M M There are very few clouds, so it is mild outside.
4/22/2014 7:45 AM 0.00 0.0 M M M No traces. There are a few clouds.
4/29/2014 7:50 AM 0.00 0.0 M M M Completely dry. Onnika hanson
4/30/2014 8:00 AM 0.00 0.0 M M M There are no traces and it is a little windy.
5/8/2014 7:25 AM 0.35 M M M M Calm, cloudly, damp.
5/10/2014 7:00 AM 0.00 0.0 M M M
5/13/2014 7:00 AM 0.00 0.0 M M M
5/19/2014 7:00 AM M M M M M sunny, clear (Edit: Initial observation reported as 0.22" changed to NA due to multi-day report. A.M.)
8/15/2014 8:00 AM 0.41 M M M M large down pour yesterday from 3:30pm to 4:50pm
9/3/2014 10:30 AM 0.16 M M M M clear skies, bug in gauge
9/4/2014 9:10 AM 0.02 M M M M cool, breezy, partly cloudy.
9/5/2014 7:00 AM 0.39 M M M M overcast
9/9/2014 7:00 AM 0.05 M M M M raining, overcast, cool and breezy
9/10/2014 10:30 AM 0.33 M M M M overcast with drizzle since last night



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/4/2013 10/11/2013 7:00 AM 8 0.05 M M
10/19/2013 10/21/2013 7:00 AM 3 0.21 M M Fog, cold and frost covering the outside of the gauge.
10/26/2013 10/28/2013 7:00 AM 3 0.00 M M cold and overcast
11/2/2013 11/03/2013 7:00 AM 2 0.00 M M Cloudy, cool morning. No rain.
11/9/2013 11/12/2013 7:20 AM 4 0.00 M M There was frost on the outside. The sky is clear.
11/16/2013 11/18/2013 7:00 AM 3 0.00 M M Cold but sunny and clear
11/20/2013 12/03/2013 9:00 AM 14 0.05 M M Dry moderate temp
12/30/2013 1/06/2014 11:15 AM 8 0.26 M M Sunny but cold outside. Around 1° F
1/11/2014 1/13/2014 7:00 AM 3 0.00 M M Nothing in the rain gauge. There are a few clouds.
3/8/2014 3/10/2014 7:30 AM 3 0.54 M M Seems like this a lot of rain. Some clouds
3/15/2014 3/17/2014 9:30 AM 3 0.00 M M Partly cloudy, sun shining. Sarah McCaddon
3/22/2014 3/24/2014 8:00 AM 3 0.09 M M It is cold and cloudy.
3/29/2014 4/07/2014 8:24 AM 10 0.53 M M We had snow rain and sun all in one week Onnika, michele, Alex, Roberto Block 5
4/12/2014 4/14/2014 7:30 AM 3 0.30 M M There is snow on the ground.
4/15/2014 4/16/2014 7:30 AM 2 0.00 M M No traces.
4/18/2014 4/21/2014 8:20 AM 4 0.23 M M Onnika Hanson.
4/23/2014 4/24/2014 8:20 AM 2 0.06 M M There wire particles and bugs in the water.
4/25/2014 4/28/2014 11:52 AM 4 0.00 M M There is no rain in the rain gauge. Today it is windy and sunny. The only thing in the rain gauge is a bug other than that there is no sign of rain. -Luis Flores, Jimena Arriaga, Lesley Crespo
5/1/2014 5/02/2014 8:45 AM 2 0.05 M M Clear day
5/3/2014 5/06/2014 7:30 AM 4 0.04 M M It is a little chilly and there are clouds.
5/11/2014 5/13/2014 8:00 AM 3 1.50 M M The precipitation occurred as intermittent wet snow and rain
5/17/2014 5/19/2014 12:00 AM 3 0.22 M M
8/29/2014 9/02/2014 11:00 AM 5 0.13 M M Three day weekend, bug in gauge
9/6/2014 9/08/2014 7:05 AM 3 0.05 M M High clouds, fair, calm winds
9/11/2014 9/12/2014 7:05 AM 2 0.21 M M drizzle, low clouds
9/13/2014 9/16/2014 7:10 AM 4 0.01 M M fair skies, bug in gauge
9/17/2014 9/18/2014 7:05 AM 2 0.00 M M Clear skies
9/19/2014 9/22/2014 7:05 AM 4 0.00 M M Clear skies
9/23/2014 9/24/2014 7:15 AM 2 0.03 M M Drizzle, partly cloudy, trace
9/25/2014 9/26/2014 7:10 AM 2 0.01 M M
9/27/2014 9/30/2014 7:15 AM 4 0.47 M M Clear skies, bug in gauge



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