Station Overview Station Location
Station Number CO-BO-118 Latitude 40.1832
Station Name Longmont 2.9 WNW Longitude -105.1516
County Boulder Elevation (ft) 5098



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 17 0.98 1.58 13 1.58 13 0.00 0 0 6 0 1.5 2 0
Nov 17 0.79 0.15 2 0.15 2 0.00 0 0 1 1 0.0 0 0
Dec 17 0.56 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 18 0.35 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 18 0.46 0.00 1 0.00 1 0.00 0 0 0 1 0.0 0 0
March 18 1.48 0.68 1 0.68 1 0.00 0 0 1 0 0.2 1 0
April 18 1.79 0.07 4 0.07 4 0.00 0 0 2 0 0.0 0 0
May 18 2.33 4.57 10 4.57 10 0.00 0 0 9 0 0.0 0 0
June 18 1.74 0.86 8 0.86 8 0.00 0 0 4 0 0.0 0 0
July 18 1.26 1.56 10 1.56 10 0.00 0 0 6 1 0.0 0 0
Aug 18 1.38 1.20 3 1.20 3 0.00 0 0 3 0 0.0 0 0
Sept 18 1.32 0.12 12 0.12 4 0.00 8 1 2 1 0.0 0 0
Water Year Totals: 14.44" 10.79" 64 days 10.79" 56 0.00" 8 days 1 34 days 4 days 1.7" 3 days 0 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
10/1/2017 0.01
10/2/2017 0.54
10/3/2017 0.32
10/4/2017 0.01
10/5/2017 0.00
10/6/2017 0.00
10/7/2017 0.00
10/8/2017 0.00
10/9/2017 0.45
10/10/2017 0.25
10/11/2017 0.00
10/12/2017 0.00
10/13/2017 0.00
10/14/2017
10/15/2017
10/16/2017
10/17/2017
10/18/2017
10/19/2017
10/20/2017
10/21/2017
10/22/2017
10/23/2017
10/24/2017
10/25/2017
10/26/2017
10/27/2017
10/28/2017
10/29/2017
10/30/2017
10/31/2017
11/1/2017
11/2/2017
11/3/2017
11/4/2017
11/5/2017 0.15
11/6/2017 T
11/7/2017
11/8/2017
11/9/2017
11/10/2017
11/11/2017
11/12/2017
11/13/2017
11/14/2017
11/15/2017
11/16/2017
11/17/2017
11/18/2017
11/19/2017
11/20/2017
11/21/2017
11/22/2017
11/23/2017
11/24/2017
11/25/2017
11/26/2017
11/27/2017
11/28/2017
11/29/2017
11/30/2017
12/1/2017
12/2/2017
12/3/2017
12/4/2017
12/5/2017
12/6/2017
12/7/2017
12/8/2017
12/9/2017
12/10/2017
12/11/2017
12/12/2017
12/13/2017
12/14/2017
12/15/2017
12/16/2017
12/17/2017
12/18/2017
12/19/2017
12/20/2017
12/21/2017
12/22/2017
12/23/2017
12/24/2017
12/25/2017
12/26/2017
12/27/2017
12/28/2017
12/29/2017
12/30/2017
12/31/2017
Day of YearDaily PrcpMultiday Prcp
1/1/2018
1/2/2018
1/3/2018
1/4/2018
1/5/2018
1/6/2018
1/7/2018
1/8/2018
1/9/2018
1/10/2018
1/11/2018
1/12/2018
1/13/2018
1/14/2018
1/15/2018
1/16/2018
1/17/2018
1/18/2018
1/19/2018
1/20/2018
1/21/2018
1/22/2018
1/23/2018
1/24/2018
1/25/2018
1/26/2018
1/27/2018
1/28/2018
1/29/2018
1/30/2018
1/31/2018
2/1/2018
2/2/2018
2/3/2018
2/4/2018
2/5/2018
2/6/2018
2/7/2018
2/8/2018
2/9/2018
2/10/2018
2/11/2018
2/12/2018
2/13/2018 T
2/14/2018
2/15/2018
2/16/2018
2/17/2018
2/18/2018
2/19/2018
2/20/2018
2/21/2018
2/22/2018
2/23/2018
2/24/2018
2/25/2018
2/26/2018
2/27/2018
2/28/2018
3/1/2018
3/2/2018
3/3/2018
3/4/2018
3/5/2018
3/6/2018
3/7/2018
3/8/2018
3/9/2018
3/10/2018
3/11/2018
3/12/2018
3/13/2018
3/14/2018
3/15/2018
3/16/2018
3/17/2018
3/18/2018
3/19/2018 0.68
3/20/2018
3/21/2018
3/22/2018
3/23/2018
3/24/2018
3/25/2018
3/26/2018
3/27/2018
3/28/2018
3/29/2018
3/30/2018
3/31/2018
Day of YearDaily PrcpMultiday Prcp
4/1/2018
4/2/2018
4/3/2018
4/4/2018
4/5/2018
4/6/2018
4/7/2018
4/8/2018
4/9/2018 0.05
4/10/2018 0.02
4/11/2018 0.00
4/12/2018 0.00
4/13/2018
4/14/2018
4/15/2018
4/16/2018
4/17/2018
4/18/2018
4/19/2018
4/20/2018
4/21/2018
4/22/2018
4/23/2018
4/24/2018
4/25/2018
4/26/2018
4/27/2018
4/28/2018
4/29/2018
4/30/2018
5/1/2018
5/2/2018
5/3/2018 1.17
5/4/2018 0.59
5/5/2018
5/6/2018
5/7/2018
5/8/2018
5/9/2018
5/10/2018
5/11/2018
5/12/2018 0.10
5/13/2018 0.42
5/14/2018 0.55
5/15/2018 0.02
5/16/2018 0.00
5/17/2018
5/18/2018
5/19/2018 1.00
5/20/2018
5/21/2018
5/22/2018
5/23/2018 0.37
5/24/2018
5/25/2018
5/26/2018
5/27/2018
5/28/2018
5/29/2018 0.35
5/30/2018
5/31/2018
6/1/2018
6/2/2018
6/3/2018
6/4/2018
6/5/2018
6/6/2018
6/7/2018
6/8/2018
6/9/2018
6/10/2018
6/11/2018
6/12/2018
6/13/2018
6/14/2018
6/15/2018
6/16/2018
6/17/2018
6/18/2018 0.19
6/19/2018 0.49
6/20/2018 0.07
6/21/2018 0.00
6/22/2018 0.00
6/23/2018 0.00
6/24/2018 0.00
6/25/2018 0.11
6/26/2018
6/27/2018
6/28/2018
6/29/2018
6/30/2018
Day of YearDaily PrcpMultiday Prcp
7/1/2018 0.08
7/2/2018 0.00
7/3/2018
7/4/2018
7/5/2018
7/6/2018
7/7/2018
7/8/2018
7/9/2018
7/10/2018
7/11/2018
7/12/2018
7/13/2018 0.00
7/14/2018
7/15/2018 T
7/16/2018 0.34
7/17/2018
7/18/2018
7/19/2018
7/20/2018
7/21/2018
7/22/2018
7/23/2018 0.01
7/24/2018 0.53
7/25/2018 0.00
7/26/2018 0.56
7/27/2018 0.04
7/28/2018
7/29/2018
7/30/2018
7/31/2018
8/1/2018
8/2/2018
8/3/2018
8/4/2018
8/5/2018
8/6/2018
8/7/2018
8/8/2018
8/9/2018
8/10/2018
8/11/2018
8/12/2018
8/13/2018
8/14/2018
8/15/2018 0.06
8/16/2018
8/17/2018
8/18/2018
8/19/2018 1.13
8/20/2018
8/21/2018
8/22/2018
8/23/2018
8/24/2018
8/25/2018
8/26/2018
8/27/2018 0.01
8/28/2018
8/29/2018
8/30/2018
8/31/2018
9/1/2018
9/2/2018
9/3/2018
9/4/2018
9/5/2018 0.07
9/6/2018 **
9/7/2018 **
9/8/2018 **
9/9/2018 **
9/10/2018 **
9/11/2018 **
9/12/2018 **
9/13/2018 T
9/14/2018 0.00
9/15/2018
9/16/2018
9/17/2018 T
9/18/2018
9/19/2018
9/20/2018 0.05
9/21/2018
9/22/2018
9/23/2018
9/24/2018
9/25/2018
9/26/2018
9/27/2018
9/28/2018
9/29/2018
9/30/2018



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2017 7:00 AM 0.01 M M M M
10/2/2017 7:00 AM 0.54 M M M M
10/3/2017 7:00 AM 0.32 M M M M
10/4/2017 7:00 AM 0.01 M M M M
10/5/2017 7:00 AM 0.00 0.0 M M M
10/6/2017 7:00 AM 0.00 0.0 M M M
10/7/2017 7:00 AM 0.00 0.0 M M M
10/8/2017 7:00 AM 0.00 0.0 M M M
10/9/2017 7:00 AM 0.45 1.0 M M M Approximation based on data for two day period
10/10/2017 7:00 AM 0.25 0.5 M M M Approx. based on data from 2-day period
10/11/2017 7:00 AM 0.00 0.0 M M M
10/12/2017 7:00 AM 0.00 0.0 M M M
10/13/2017 7:00 AM 0.00 0.0 M M M
11/5/2017 7:00 AM 0.15 M M M M
11/6/2017 7:00 AM T M M M M
2/13/2018 7:00 AM T T T M M
3/19/2018 7:00 AM 0.68 0.2 M M M Crusty frozen slush on the grass this morning.
4/9/2018 7:00 AM 0.05 M M M M Rain/snow mix a 7am, mostly rain
4/10/2018 7:00 AM 0.02 M M M M Continuation of morning rain/snow mix (mostly rain) yesterday between 7am and 8am
4/11/2018 7:00 AM 0.00 0.0 M M M
4/12/2018 7:00 AM 0.00 0.0 M M M
5/3/2018 7:00 AM 1.17 M M M M
5/4/2018 7:00 AM 0.59 M M M M
5/12/2018 7:00 AM 0.10 M M M M Drizzle city!
5/13/2018 7:00 AM 0.42 M M M M Several good showers, plus a long day of drizzle and light rain
5/14/2018 7:00 AM 0.55 M M M M Series of pretty strong showers
5/15/2018 7:00 AM 0.02 M M M M
5/16/2018 7:00 AM 0.00 0.0 M M M
5/19/2018 7:00 AM 1.00 M M M M Heavy rain in the afternoon, accompanied by a lot of pea-sized hail... then just rain. The gauge measured exactly 1.00".
5/23/2018 7:00 AM 0.37 M M M M Two shots of heavy rain about an hour apart. Some pea and marble sized hail, too.
5/29/2018 7:00 AM 0.35 M M M M Heavy rain mixed with pea sized hail
6/18/2018 7:00 AM 0.19 M M M M
6/19/2018 7:00 AM 0.49 M M M M
6/20/2018 7:00 AM 0.07 M M M M
6/21/2018 7:00 AM 0.00 0.0 M M M
6/22/2018 7:00 AM 0.00 0.0 M M M
6/23/2018 7:00 AM 0.00 0.0 M M M
6/24/2018 7:00 AM 0.00 0.0 M M M
6/25/2018 7:00 AM 0.11 M M M M
7/1/2018 7:00 AM 0.08 M M M M
7/2/2018 7:00 AM 0.00 0.0 M M M
7/13/2018 7:00 AM 0.00 0.0 M M M
7/15/2018 7:00 AM T M M M M A few sprinkles right around 7am today.
7/16/2018 7:00 AM 0.34 M M M M
7/23/2018 7:00 AM 0.01 M M M M Good shower, but it didn't amount to much.
7/24/2018 7:00 AM 0.53 M M M M
7/25/2018 7:00 AM 0.00 0.0 M M M
7/26/2018 7:00 AM 0.56 M M M M Multiple downpours, with the heaviest coming at 2am, plus some nice steady light rain for a while (which is unusual here) around 7pm.
7/27/2018 7:00 AM 0.04 M M M M
8/15/2018 7:00 AM 0.06 M M M M
8/19/2018 7:00 AM 1.13 M M M M Tremendous downpour mixed with pea sized hail around 10pm last night. Hail piles around the house.
8/27/2018 7:00 AM 0.01 M M M M Thunderstorm at 4:40am
9/5/2018 7:00 AM 0.07 M M M M
9/14/2018 7:00 AM 0.00 0.0 M M M
9/17/2018 7:00 AM T M M M M A few sprinkles in the evening
9/20/2018 7:00 AM 0.05 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
9/6/2018 9/13/2018 7:00 AM 8 T M M Just a sprinkle on one day.



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