Station Overview Station Location
Station Number CO-BO-165 Latitude 40.0124
Station Name Boulder 1.8 ESE Longitude -105.2307
County Boulder Elevation (ft) 5266



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 18 1.29 0.20 7 0.20 7 0.00 0 0 3 2 0.0 0 0
Nov 18 0.95 1.02 24 1.02 24 0.00 0 0 5 1 15.5 4 2
Dec 18 0.72 0.13 31 0.13 31 0.00 0 0 3 4 1.5 4 0
Jan 19 0.59 1.46 30 0.69 17 0.77 13 1 5 1 11.5 6 0
Feb 19 0.61 0.59 28 0.59 28 0.00 0 0 9 3 9.7 9 3
March 19 1.83 2.43 31 2.43 31 0.00 0 0 10 1 13.2 6 1
April 19 2.22 1.40 30 0.67 25 0.73 5 1 5 2 4.1 1 1
May 19 2.59 3.22 31 3.22 31 0.00 0 0 15 6 5.2 4 0
June 19 2.03 2.05 30 2.05 30 0.00 0 0 11 5 0.0 0 0
July 19 1.69 2.43 30 2.43 30 0.00 0 0 10 4 0.0 0 0
Aug 19 1.60 0.06 27 0.06 27 0.00 0 0 1 5 0.0 0 0
Sept 19 1.56 0.00 6 0.00 6 0.00 0 0 0 2 0.0 0 0
Water Year Totals: 17.68" 14.99" 305 days 13.49" 287 1.50" 18 days 2 77 days 36 days 60.7" 34 days 7 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
10/1/2018 0.00
10/2/2018 T
10/3/2018 T
10/4/2018 0.03
10/5/2018 0.01
10/6/2018 0.16
10/7/2018 0.00
10/8/2018
10/9/2018
10/10/2018
10/11/2018
10/12/2018
10/13/2018
10/14/2018
10/15/2018
10/16/2018
10/17/2018
10/18/2018
10/19/2018
10/20/2018
10/21/2018
10/22/2018
10/23/2018
10/24/2018
10/25/2018
10/26/2018
10/27/2018
10/28/2018
10/29/2018
10/30/2018
10/31/2018
11/1/2018
11/2/2018
11/3/2018
11/4/2018
11/5/2018
11/6/2018
11/7/2018 0.00
11/8/2018 0.00
11/9/2018 0.00
11/10/2018 0.00
11/11/2018 0.36
11/12/2018 0.29
11/13/2018 0.01
11/14/2018 0.00
11/15/2018 0.00
11/16/2018 0.00
11/17/2018 0.04
11/18/2018 0.32
11/19/2018 0.00
11/20/2018 0.00
11/21/2018 0.00
11/22/2018 0.00
11/23/2018 0.00
11/24/2018 0.00
11/25/2018 T
11/26/2018 0.00
11/27/2018 0.00
11/28/2018 0.00
11/29/2018 0.00
11/30/2018 0.00
12/1/2018 T
12/2/2018 0.00
12/3/2018 0.08
12/4/2018 0.00
12/5/2018 0.00
12/6/2018 0.04
12/7/2018 0.00
12/8/2018 0.00
12/9/2018 0.00
12/10/2018 0.00
12/11/2018 0.00
12/12/2018 0.00
12/13/2018 0.00
12/14/2018 0.00
12/15/2018 0.00
12/16/2018 0.00
12/17/2018 0.00
12/18/2018 0.00
12/19/2018 0.00
12/20/2018 0.00
12/21/2018 0.00
12/22/2018 0.00
12/23/2018 T
12/24/2018 0.00
12/25/2018 0.00
12/26/2018 0.00
12/27/2018 0.01
12/28/2018 T
12/29/2018 T
12/30/2018 0.00
12/31/2018 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2019 0.14
1/2/2019 0.00
1/3/2019 0.00
1/4/2019 0.00
1/5/2019 0.00
1/6/2019 0.00
1/7/2019 **
1/8/2019 **
1/9/2019 **
1/10/2019 **
1/11/2019 **
1/12/2019 **
1/13/2019 **
1/14/2019 **
1/15/2019 **
1/16/2019 **
1/17/2019 **
1/18/2019 **
1/19/2019 0.77
1/20/2019 M
1/21/2019 0.00
1/22/2019 0.02
1/23/2019 0.00
1/24/2019 T
1/25/2019 0.15
1/26/2019 0.00
1/27/2019 0.00
1/28/2019 0.22
1/29/2019 0.16
1/30/2019 0.00
1/31/2019 0.00
2/1/2019 0.00
2/2/2019 0.00
2/3/2019 0.00
2/4/2019 T
2/5/2019 0.00
2/6/2019 T
2/7/2019 0.31
2/8/2019 0.00
2/9/2019 0.00
2/10/2019 0.00
2/11/2019 0.00
2/12/2019 0.02
2/13/2019 0.00
2/14/2019 0.00
2/15/2019 0.01
2/16/2019 0.00
2/17/2019 0.02
2/18/2019 0.03
2/19/2019 0.01
2/20/2019 0.02
2/21/2019 0.00
2/22/2019 0.03
2/23/2019 0.14
2/24/2019 0.00
2/25/2019 0.00
2/26/2019 0.00
2/27/2019 0.00
2/28/2019 T
3/1/2019 0.00
3/2/2019 0.06
3/3/2019 0.47
3/4/2019 0.07
3/5/2019 0.00
3/6/2019 0.00
3/7/2019 0.08
3/8/2019 0.00
3/9/2019 0.04
3/10/2019 0.00
3/11/2019 0.00
3/12/2019 0.00
3/13/2019 0.16
3/14/2019 0.97
3/15/2019 0.00
3/16/2019 0.00
3/17/2019 0.00
3/18/2019 0.00
3/19/2019 0.00
3/20/2019 T
3/21/2019 0.00
3/22/2019 0.00
3/23/2019 0.06
3/24/2019 0.00
3/25/2019 0.00
3/26/2019 0.00
3/27/2019 0.00
3/28/2019 0.00
3/29/2019 0.09
3/30/2019 0.43
3/31/2019 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2019 0.00
4/2/2019 0.00
4/3/2019 0.02
4/4/2019 0.00
4/5/2019 0.00
4/6/2019 0.00
4/7/2019 0.00
4/8/2019 0.00
4/9/2019 0.00
4/10/2019 T
4/11/2019 **
4/12/2019 **
4/13/2019 **
4/14/2019 **
4/15/2019 0.73
4/16/2019 0.00
4/17/2019 T
4/18/2019 0.01
4/19/2019 0.00
4/20/2019 0.00
4/21/2019 0.00
4/22/2019 0.19
4/23/2019 0.04
4/24/2019 0.00
4/25/2019 0.00
4/26/2019 0.00
4/27/2019 0.00
4/28/2019 0.00
4/29/2019 0.00
4/30/2019 0.41
5/1/2019 0.12
5/2/2019 0.09
5/3/2019 0.00
5/4/2019 0.00
5/5/2019 0.00
5/6/2019 0.00
5/7/2019 0.11
5/8/2019 0.18
5/9/2019 0.79
5/10/2019 0.17
5/11/2019 0.00
5/12/2019 T
5/13/2019 0.00
5/14/2019 T
5/15/2019 T
5/16/2019 T
5/17/2019 T
5/18/2019 0.03
5/19/2019 T
5/20/2019 0.16
5/21/2019 1.05
5/22/2019 0.02
5/23/2019 0.19
5/24/2019 0.11
5/25/2019 0.00
5/26/2019 0.00
5/27/2019 0.06
5/28/2019 0.06
5/29/2019 0.08
5/30/2019 0.00
5/31/2019 0.00
6/1/2019 T
6/2/2019 0.00
6/3/2019 T
6/4/2019 0.06
6/5/2019 T
6/6/2019 0.10
6/7/2019 0.00
6/8/2019 0.04
6/9/2019 0.05
6/10/2019 0.00
6/11/2019 0.00
6/12/2019 0.00
6/13/2019 0.00
6/14/2019 T
6/15/2019 T
6/16/2019 0.00
6/17/2019 0.07
6/18/2019 0.32
6/19/2019 0.02
6/20/2019 0.00
6/21/2019 0.01
6/22/2019 1.06
6/23/2019 0.31
6/24/2019 0.01
6/25/2019 0.00
6/26/2019 0.00
6/27/2019 0.00
6/28/2019 0.00
6/29/2019 0.00
6/30/2019 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2019 0.07
7/2/2019 0.84
7/3/2019 0.00
7/4/2019 0.00
7/5/2019 0.06
7/6/2019 0.82
7/7/2019 0.00
7/8/2019 T
7/9/2019 0.00
7/10/2019 0.00
7/11/2019 0.00
7/12/2019 0.00
7/13/2019 0.00
7/14/2019 T
7/15/2019 0.08
7/16/2019 0.03
7/17/2019 0.00
7/18/2019 0.00
7/19/2019 0.00
7/20/2019 0.00
7/21/2019 0.26
7/22/2019 0.17
7/23/2019 T
7/24/2019 0.00
7/25/2019
7/26/2019 T
7/27/2019 0.00
7/28/2019 0.03
7/29/2019 0.00
7/30/2019 0.00
7/31/2019 0.07
8/1/2019 T
8/2/2019
8/3/2019
8/4/2019
8/5/2019
8/6/2019 T
8/7/2019 0.00
8/8/2019 0.00
8/9/2019 0.06
8/10/2019 0.00
8/11/2019 T
8/12/2019 T
8/13/2019 0.00
8/14/2019 0.00
8/15/2019 0.00
8/16/2019 0.00
8/17/2019 0.00
8/18/2019 0.00
8/19/2019 0.00
8/20/2019 0.00
8/21/2019 0.00
8/22/2019 T
8/23/2019 0.00
8/24/2019 0.00
8/25/2019 0.00
8/26/2019 0.00
8/27/2019 0.00
8/28/2019 0.00
8/29/2019 0.00
8/30/2019 0.00
8/31/2019 0.00
9/1/2019 0.00
9/2/2019 0.00
9/3/2019 0.00
9/4/2019 0.00
9/5/2019 T
9/6/2019 T
9/7/2019
9/8/2019
9/9/2019
9/10/2019
9/11/2019
9/12/2019
9/13/2019
9/14/2019
9/15/2019
9/16/2019
9/17/2019
9/18/2019
9/19/2019
9/20/2019
9/21/2019
9/22/2019
9/23/2019
9/24/2019
9/25/2019
9/26/2019
9/27/2019
9/28/2019
9/29/2019
9/30/2019



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2018 7:00 AM 0.00 0.0 M M M 59º / 45º
10/2/2018 7:00 AM T 0.0 M M M 65º / 48º Some sprinkles in the afternoon. (T)
10/3/2018 7:00 AM T 0.0 M M M 78º / 50º Some sprinkles ~ 3:18-3:28p (T)
10/4/2018 7:00 AM 0.03 0.0 M M M 85º / 50º Evening shower before 9:30p (.03)
10/5/2018 7:00 AM 0.01 0.0 M M M 65º / 50º Brief shower ~ 1:30-1:40p (.01)
10/6/2018 7:00 AM 0.16 0.0 M M M 73º / 44º Showers ~ 4:00-6:00p (.14) Overnight shower (.02)
10/7/2018 7:00 AM 0.00 0.0 M M M 53º / 42º
11/7/2018 7:00 AM 0.00 0.0 M M M 54º / 29º
11/8/2018 7:00 AM 0.00 0.0 M M M 45º / 28º
11/9/2018 7:00 AM 0.00 0.0 M M M 43º / 21º
11/10/2018 7:00 AM 0.00 0.0 M M M 46º / 22º
11/11/2018 7:00 AM 0.36 6.1 0.36 M M 57º / 29º Lt snow begins sometime after midnight before 2:30a, w occ imbedded mod showers continuing at 7:00a (.36/6.1")
11/12/2018 7:00 AM 0.29 6.5 0.29 10.0 M 35º / 22º Lt snow w occ imbedded mod snow showers 7:00a ~ 3:40p. Occ lt snow/flurries ~ 8:00p-3:00a (.29/6.5)
11/13/2018 7:00 AM 0.01 0.8 M M M 35º / 18º Lt snow flurries ~ 7:45-8:35a (.01/.8)
11/14/2018 7:00 AM 0.00 0.0 M M M 49º / 24º
11/15/2018 7:00 AM 0.00 0.0 M M M 58º / 29º
11/16/2018 7:00 AM 0.00 0.0 M M M 59º / 29º
11/17/2018 7:00 AM 0.04 0.0 M M M 63º / 35º Drizzle/lt rain ~ 3:00-7:00a (.04)
11/18/2018 7:00 AM 0.32 2.1 M 2.0 M 36º / 18º Drizzle/lt Rain at 7:00a, changing to lt snow ~ 8:00a, w lt snow occ mixed w freezing rain into late evening (.32/2.1)
11/19/2018 7:00 AM 0.00 0.0 M M M 45º / 20º
11/20/2018 7:00 AM 0.00 0.0 M M M 49º / 23º
11/21/2018 7:00 AM 0.00 0.0 M M M 54º / 29º
11/22/2018 7:00 AM 0.00 0.0 M M M 59º / 30º
11/23/2018 7:00 AM 0.00 0.0 M M M 54º / 37º
11/24/2018 7:00 AM 0.00 0.0 M M M 51º / 30º
11/25/2018 7:00 AM T 0.0 M M M 54º / 27º Sprinkles/lt rain ~ 1:10-1:30p (T)
11/26/2018 7:00 AM 0.00 0.0 M M M 45º / 21º
11/27/2018 7:00 AM 0.00 0.0 M M M 51º / 22º
11/28/2018 7:00 AM 0.00 0.0 M M M 57º / 30º
11/29/2018 7:00 AM 0.00 0.0 M M M 58º / 35º
11/30/2018 7:00 AM 0.00 0.0 M M M 48º / 28º
12/1/2018 7:00 AM T 0.0 M M M 39º / 24º A bit of drizzle/sprinkles ~ 4:00-5:15p (T)
12/2/2018 7:00 AM 0.00 0.0 M M M 36º / 20º
12/3/2018 7:00 AM 0.08 0.8 M M M 40º / 20º Lt snow/flurries ~ 8:15p-midnight (.05/.8)
12/4/2018 7:00 AM 0.00 0.0 M M M 38º / 21º
12/5/2018 7:00 AM 0.00 0.0 M M M 49º / 17º
12/6/2018 7:00 AM 0.04 0.5 M M M 47º / 18º Lt snow/flurries after midnight ending by 4:00a. Occ flurries/lt snow thru 8:00a (.04/.5)
12/7/2018 7:00 AM 0.00 0.0 M M M 30º / 20º
12/8/2018 7:00 AM 0.00 0.0 M M M 42º / 20º
12/9/2018 7:00 AM 0.00 0.0 M M M 47º / 21º
12/10/2018 7:00 AM 0.00 0.0 M M M 46º / 16º
12/11/2018 7:00 AM 0.00 0.0 M M M 52º / 22º
12/12/2018 7:00 AM 0.00 0.0 M M M 55º / 27º
12/13/2018 7:00 AM 0.00 0.0 M M M 53º / 23º
12/14/2018 7:00 AM 0.00 0.0 M M M 46º / 22º
12/15/2018 7:00 AM 0.00 0.0 M M M 53º / 23º
12/16/2018 7:00 AM 0.00 0.0 M M M 55º / 26º
12/17/2018 7:00 AM 0.00 0.0 M M M 55º / 23º
12/18/2018 7:00 AM 0.00 0.0 M M M 56º / 25º
12/19/2018 7:00 AM 0.00 0.0 M M M 56º / 30º
12/20/2018 7:00 AM 0.00 0.0 M M M 49º / 23º
12/21/2018 7:00 AM 0.00 0.0 M M M 49º / 22º
12/22/2018 7:00 AM 0.00 0.0 M M M 58º / 28º
12/23/2018 7:00 AM T 0.1 M M M 42º / 19º Lt snow/flurries ~ 10:30-11:15a (T/.1)
12/24/2018 7:00 AM 0.00 0.0 M M M 48º / 22º
12/25/2018 7:00 AM 0.00 0.0 M M M 50º / 24º
12/26/2018 7:00 AM 0.00 0.0 M M M 44º / 21º
12/27/2018 7:00 AM 0.01 0.1 M M M 40º / 21º Flurries/lt snow ~ 4:25-4:55p (.01/.1)
12/28/2018 7:00 AM T T M M M 33º / 19º Some flurries ~ 12:15p (T/T)
12/29/2018 7:00 AM T T M M M 26º / 11º Occ lt flurries ~ 9:10a through 2:40p (T/T)
12/30/2018 7:00 AM 0.00 0.0 M M M 38º / 11º
12/31/2018 7:00 AM 0.00 0.0 M M M 49º / 22º
1/1/2019 8:00 AM 0.14 2.8 M M M 25º / 8º Flurries ~ 7:38a, becoming lt snow ~ 7:55a-4:30p, w mod/lt snow ~ 1:55-3:00p, lt snow/flurries continuing at 4:30p (.1/2.1) thru early morning hours (.04/.7)
1/2/2019 7:00 AM 0.00 0.0 M M M 19º / 5º
1/3/2019 7:00 AM 0.00 0.0 M M M 39º / 16º
1/4/2019 7:00 AM 0.00 0.0 M M M 53º / 16º
1/5/2019 7:00 AM 0.00 0.0 M M M 59º / 27º
1/6/2019 7:00 AM 0.00 0.0 M M M 57º / 27º
1/20/2019 7:00 AM M M M M M NOTE: THIS REPORT WAS ERRONEOUSLY SUBMITTED AS A DAILY REPORT. IT WAS SUBSEQUENTLY SUBMITTED AS A MULTI-DAY ACCUMULATION REPORT. Showing in gage 1/7-19/19 (precipitation only) with NO factoring for evaporation over the period. {EDIT: Changed report of 0.77 to NA to be more representative since a multi-day report is already entered. CoCoSTAFF DNT}
1/21/2019 7:00 AM 0.00 0.0 M M M 53º / 18º
1/22/2019 7:00 AM 0.02 0.2 0.02 M M 48º / 26º Lt snow ~ 9:30p ending before midnight (.02/.2)
1/23/2019 7:00 AM 0.00 0.0 M M M 44º / 23º
1/24/2019 7:00 AM T 0.1 M M M 46º / 23º Lt snow before 7:00a (T/.1)
1/25/2019 7:00 AM 0.15 2.4 M M M 31º / 15º AM lt snow (.15/2.4) ending before 11:30a
1/26/2019 7:00 AM 0.00 0.0 M M M 41º / 15º
1/27/2019 7:00 AM 0.00 0.0 M M M 48º / 31º
1/28/2019 7:00 AM 0.22 2.8 0.22 M M 54º / 27º Snow develops after 3:00a, continuing at 7:00a (.22/2.8)
1/29/2019 7:00 AM 0.16 3.2 0.16 M M 34º / 10º Lt/mod snow thru 12:45p (.16/3.2). Flurries thru 2:15p (T/T)
1/30/2019 7:00 AM 0.00 0.0 M M M 35º / 10º
1/31/2019 7:00 AM 0.00 0.0 M M M 46º / 11º
2/1/2019 7:00 AM 0.00 0.0 M M M 50º / 23º
2/2/2019 7:00 AM 0.00 0.0 M M M 57º / 25º
2/3/2019 7:00 AM 0.00 0.0 M M M 57º / 24º
2/4/2019 7:00 AM T 0.0 M M M 60º / 40º Breezy w lt shower ~ 8:35p (T)
2/5/2019 7:00 AM 0.00 0.0 M M M 51º / 22º
2/6/2019 7:00 AM T T M M M 41º / 19º Early AM Fog w occ snow pellets (T/T)
2/7/2019 7:00 AM 0.31 5.3 0.31 4.5 M 25º / -1º Fog w occ snow pellets @ 7:00a becoming flurries ~ 9:30a increasing to lt/mod snow ~ 10:15a-12:20p, slowly diminishing to flurries by 1:30p. (.17/2.9) Flurries becoming lt/mod snow ~ 5:35-5:55p, tapering to flurries ~ 5:55-9:30p(.14/2.3)
2/8/2019 7:00 AM 0.00 0.0 M M M 21º / 0º
2/9/2019 7:00 AM 0.00 0.0 M M M 31º / 6º
2/10/2019 7:00 AM 0.00 0.0 M M M 39º / 13º
2/11/2019 7:00 AM 0.00 0.0 M M M 33º / 12º
2/12/2019 7:00 AM 0.02 0.1 0.02 M M 38º / 12º Occ flurries/lt snow ~ 8:30-10:15a (.02/.1)
2/13/2019 7:00 AM 0.00 0.0 M M M 50º / 26º
2/14/2019 7:00 AM 0.00 0.0 M M M 57º / 37º Very windy with high gusts ~ 50-70mph from mid-morning thru the night.
2/15/2019 7:00 AM 0.01 0.1 0.01 M M 57º / 25º Lt snow/flurries sometime after 4:00a, ending before 7:00a (.01/.1)
2/16/2019 7:00 AM 0.00 0.0 M M M 58º / 23º Early afternoon winds with gusts above 50mph.
2/17/2019 7:00 AM 0.02 0.1 0.02 M M 38º / 25º Flurries/lt snow ~ 12:30-2:45p (.02/.1)
2/18/2019 7:00 AM 0.03 1.6 0.03 1.5 M 36º / 12º Periods of flurries/lt snow ~ 3:50-10:15p (.02/1.3) Occ overnight flurries/snow showers thru 7:00a (.01/.3)
2/19/2019 7:00 AM 0.01 0.2 0.01 M M 25º / 12º Lt snow/flurries 7:00 ~ 9:30a Occ flurries/lt snow thru 1:00p (.01/.2) Occ flurries thru 4:10p (T/T)
2/20/2019 7:00 AM 0.02 0.5 0.02 M M 27º / 11º Flurries /lt snow ~ 7:30-9:30a (.01/.4) Occ flurries/lt snow ~ 3:30-5:25p (.01/.1)
2/21/2019 7:00 AM 0.00 0.0 M M M 37º / 13º
2/22/2019 7:00 AM 0.03 0.3 0.03 M M 37º / 22º Occ freezing drizzle ~ 8:20p changing to lt snow/flurries ~ 9:25-11:45p (.03/.3)
2/23/2019 7:00 AM 0.14 1.5 0.14 2.0 M 28º / 22º Lt flurries ~ 8:45-9:30a (T/T) Lt snow ~ 4:00p-12:15a (.14/1.5)
2/24/2019 7:00 AM 0.00 0.0 M M M 40º / 21º
2/25/2019 7:00 AM 0.00 0.0 M M M 45º / 19º
2/26/2019 7:00 AM 0.00 0.0 M M M 54º / 20º An all night freezing fog left a frosty covering on trees and fences. A Beautiful! Scene!
2/27/2019 7:00 AM 0.00 0.0 M M M 49º / 18º Overnight fog.
2/28/2019 7:00 AM T T M M M 35º / 19º Occ lt few flurries ~ 8:10-10:30a (T/T)
3/1/2019 7:00 AM 0.00 0.0 M M M 55º / 30º
3/2/2019 7:00 AM 0.06 0.8 0.06 M M 52º / 26º Period of flurries/lt snow sometime around 12:00-1:00a. Flurries/lt snow starting after 5:00a, continuing at 7:00a (.06/.8)
3/3/2019 7:00 AM 0.47 5.4 0.47 M M 36º / 3º Flurries/lt snow 7:00-9:50a (.07/.9) Occ Flurries continuing thru 2:35p (T/T) Lt snow ~ 2:35p-3:35a (.4/4.5)
3/4/2019 7:00 AM 0.07 0.8 0.07 4.5 M 15º / 2º Intermittent lt snow/flurries ~ 12:05-3:50p (.07/.8)
3/5/2019 7:00 AM 0.00 0.0 M M M 25º / 5º
3/6/2019 7:00 AM 0.00 0.0 M M M 34º / 8º
3/7/2019 7:00 AM 0.08 0.2 0.08 M M 44º / 20º A bit of lt freezing rain/snow mix ~ 7:30-8:15p More Freezing rain/lt snow mix after 3:00a (.08 ice-snow/.2 ice-snow)
3/8/2019 7:00 AM 0.00 0.0 M M M 51º / 25º
3/9/2019 7:00 AM 0.04 0.0 M M M 48º / 32º Lt rain ~ 6:45-8:15p (.04)
3/10/2019 7:00 AM 0.00 0.0 M M M 52º / 28º
3/11/2019 7:00 AM 0.00 0.0 M M M 51º / 28º
3/12/2019 7:00 AM 0.00 0.0 M M M 54º / 31º
3/13/2019 7:00 AM 0.16 0.0 M M M 60º / 31º Occ drizzle/lt showers ~ 10:00p-4:45a, becoming lt rain thru 7:00a (.16) (41º at 7:00a)
3/14/2019 7:00 AM 0.97 2.1 M M M 41º / 29º Lt rain at 7:00a w frequent bands of brief mod showers, changing quickly to lt/mod snow ~ 9:45a (.76/.3 & 31º@ 11:00a) Occ lt/mod snow 11:00a-1:45p (.21/1.8)
3/15/2019 7:00 AM 0.00 0.0 M M M 43º / 20º
3/16/2019 7:00 AM 0.00 0.0 M M M 48º / 25º
3/17/2019 7:00 AM 0.00 0.0 M M M 52º / 25º
3/18/2019 7:00 AM 0.00 0.0 M M M 54º / 31º
3/19/2019 7:00 AM 0.00 0.0 M M M 45º / 31º
3/20/2019 7:00 AM T T M M M 46º / 24º A brief lt rain/snow shower mix (T/T) ~ 12:15p
3/21/2019 7:00 AM 0.00 0.0 M M M 60º / 27º
3/22/2019 7:00 AM 0.00 0.0 M M M 60º / 34º
3/23/2019 7:00 AM 0.06 0.0 M M M 58º / 38º Occ Lt showers ~ 6:45p thru the evening. (.06)
3/24/2019 7:00 AM 0.00 0.0 M M M 56º / 29º
3/25/2019 7:00 AM 0.00 0.0 M M M 60º / 36º
3/26/2019 7:00 AM 0.00 0.0 M M M 59º / 33º
3/27/2019 7:00 AM 0.00 0.0 M M M 69º / 38º
3/28/2019 7:00 AM 0.00 0.0 M M M 75º / 37º
3/29/2019 7:00 AM 0.09 0.0 M M M 63º / 39º Some showers after midnight, with drizzle at 7:00a (.09)
3/30/2019 7:00 AM 0.43 3.9 0.43 M M 44º / 31º Lt drizzle at 7:00-8:15a (T) Sprinkles/lt rain ~ 4:55p changing to lt snow ~ 8:30p(.21/1.9)-early am (.22/2")
3/31/2019 7:00 AM 0.00 0.0 M M M 49º / 30º
4/1/2019 7:00 AM 0.00 0.0 M M M 46º / 31º
4/2/2019 7:00 AM 0.00 0.0 M M M 59º / 31º
4/3/2019 7:00 AM 0.02 0.0 M M M 57º / 36º Lt rain shower sometime between 7:30-9:15pm (.02)
4/4/2019 7:00 AM 0.00 0.0 M M M 62º / 35º
4/5/2019 7:00 AM 0.00 0.0 M M M 67º / 36º
4/6/2019 7:00 AM 0.00 0.0 M M M 71º / 42º
4/7/2019 7:00 AM 0.00 0.0 M M M 71º / 38º
4/8/2019 7:00 AM 0.00 0.0 M M M 70º / 44º
4/9/2019 7:00 AM 0.00 0.0 M M M 75º / 46º
4/10/2019 7:00 AM T 0.0 M M M 79º / 45º Lt drizzle early am (after 5:00a) (T)
4/16/2019 7:00 AM 0.00 0.0 M M M 73º / 41º
4/17/2019 7:00 AM T 0.0 M M M 65º / 42º Sprinkles/lt shower ~ 4:50-5:00p (T)
4/18/2019 7:00 AM 0.01 0.0 M M M 65º / 38º Sprinkles/lt shower ~ 4:50-5:00p (.049) Late evening shower (.045)
4/19/2019 7:00 AM 0.00 0.0 M M M 65º / 37º
4/20/2019 7:00 AM 0.00 0.0 M M M 74º / 45º
4/21/2019 7:00 AM 0.00 0.0 M M M 79º / 47º
4/22/2019 7:00 AM 0.19 0.0 M M M 69º / 42º Lr Rain/sprinkles ~ 12:25-4:15p (.134) Overnight occ lt rain/sprinkles thru ~ 6:00a (.055)
4/23/2019 7:00 AM 0.04 0.0 M M M 46º / 43º Sprinkles/lt rain ~ 7:25a ending before 10:00a (.0248) Occ drizzle/sprinkles ~ 1:00-4:30p (.02)
4/24/2019 7:00 AM 0.00 0.0 M M M 64º / 45º
4/25/2019 7:00 AM 0.00 0.0 M M M 74º / 42º
4/26/2019 7:00 AM 0.00 0.0 M M M 67º / 40º
4/27/2019 7:00 AM 0.00 0.0 M M M 76º / 46º
4/28/2019 7:00 AM 0.00 0.0 M M M 67º / 44º
4/29/2019 7:00 AM 0.00 0.0 M M M 75º / 44º Windy w/ occ high gusts near 50 mph during midday.
4/30/2019 7:00 AM 0.41 4.1 0.41 4.0 M 44º / 33º Lt snow flurries ~ 10:45-11:10a (T/T) Lt snow ~ 3:30p, w lt/mod snow continuing at 12:15a (.31/3.2), ending sometime before 3:30a (.09/.9)
5/1/2019 7:00 AM 0.12 T T T M 41º / 36º Occ periods of lt rain/snow mix ~ 3:50p into the early morning (.12/T)
5/2/2019 7:00 AM 0.09 T M M M 48º / 37º Occ periods of sprinkles/showers, occ mixed w flurries of snow, late morning through late evening (.09/T)
5/3/2019 7:00 AM 0.00 0.0 M M M 61º / 37º
5/4/2019 7:00 AM 0.00 0.0 M M M 69º / 39º
5/5/2019 7:00 AM 0.00 0.0 M M M 72º / 44º
5/6/2019 7:00 AM 0.00 0.0 M M M 75º / 48º
5/7/2019 7:00 AM 0.11 0.0 M M M 68º / 46º Frequent overnight lt drizzle / showers (.11)
5/8/2019 7:00 AM 0.18 0.0 M M M 53º / 46º Period of drizzle and lt showers ~ 9:00-11:30a (.03). Lt/mod Ts ~ 12:30-1:00p, precip ending ~1:30p (.12 w typical street flooding). Sprinkles/Lt rain ~ 3:30-p Occ drizzle/lt showers ~ 9:00p-3:00a (.03)
5/9/2019 7:00 AM 0.79 1.7 M M M 43º / 36º Periods of lt rain/sprinkles ~ 8:00a-6:00p (.36) Periods of lt rain / sprinkles 7:30p, changing to lt snow after midnight, ending before 5:00a (.43/1.7)
5/10/2019 7:00 AM 0.17 0.1 M M M 43º / 35º Periods of Lt snow/flurries occ mixing w rain in the afternoon ~ 7:10a-6:30p (.13/.1) A bit of evening lt snow/rain mix (.04/T)
5/11/2019 7:00 AM 0.00 0.0 M M M 55º / 38º
5/12/2019 7:00 AM T 0.0 M M M 65º / 37º Occ sprinkles ~ 12:30-1:45p (T)
5/13/2019 7:00 AM 0.00 0.0 M M M 73º / 45º
5/14/2019 7:00 AM T 0.0 M M M 82º / 46º A couple of sprinkles ~ 1:00-2:00p (T)
5/15/2019 7:00 AM T 0.0 M M M 85º / 48º A few periods of Some sprinkles between 1:15-7:00p (T)
5/16/2019 7:00 AM T 0.0 M M M 81º / 54º A couple of early afternoon sprinkles (T)
5/17/2019 7:00 AM T 0.0 M M M 83º / 51º Brief lt shower ~ 3:40p (T)
5/18/2019 7:00 AM 0.03 0.0 M M M 70º / 41º Ts w occ sprinkles/lt rain ~ 1:40-3:35p (.015) Occ sprinkles ~ 4:45p thru early evening (.01)
5/19/2019 7:00 AM T 0.0 M M M 69º / 41º Periods of lt sprinkles/rain after noon thru mid evening (T). A bit of early morning mist ~ 4:00-6:30a (T)
5/20/2019 7:00 AM 0.16 0.0 M M M 53º / 38º Occ drizzle/lt rain overnight (.16)
5/21/2019 7:00 AM 1.05 3.3 M M M 46º / 35º Lt rain w occ snow mix ~ 7:15-10:20a, becoming occ sprinkles/lt rain thru 12:45p (.04/T) Occ drizzle/ltshowers ~ 3:40p, mixing w snow ~ 8:35p (.30/T) Wet Snow occ mixed w rain ~ 8:35p-5:30a (.71/3.3)
5/22/2019 7:00 AM 0.02 0.1 M M M 43º / 35º Lt snow shower ~ 9:15-9:50am (.02/.1)
5/23/2019 7:00 AM 0.19 0.0 M M M 50º / 40º Periods of sprinkles/lt rain showers ~ 6:15p-7:00a (.19) Sprinkles/lt rain continue at 7:00a.
5/24/2019 7:00 AM 0.11 0.0 M M M 45º / 37º Occ am drizzle/lt rain thru 10;30a (.07) Evening shower (.04)
5/25/2019 7:00 AM 0.00 0.0 M M M 71º / 43º
5/26/2019 7:00 AM 0.00 0.0 M M M 75º / 45º
5/27/2019 7:00 AM 0.06 0.0 M M M 73º / 46º Occ sprinkles/lt rain early evening thru about 9:15p (.06)
5/28/2019 7:00 AM 0.06 0.0 M M M 73º / 46º Occ sprinkles/lt rain early evening thru about 9:15p (.06)
5/29/2019 7:00 AM 0.08 0.0 M M M 69º / 45º Sprinkles ~ 8:30a (T) and again ~ 4:30p (T). Ts ~ 4-5:00a (.08)
5/30/2019 7:00 AM 0.00 0.0 M M M 60º / 41º
5/31/2019 7:00 AM 0.00 0.0 M M M 71º / 46º
6/1/2019 7:00 AM T 0.0 M M M 78º / 45º (T)
6/2/2019 7:00 AM 0.00 0.0 M M M 73º / 52º
6/3/2019 7:00 AM T 0.0 M M M 75º / 48º (T)
6/4/2019 7:00 AM 0.06 0.0 M M M 76º / 48º Ts ~ 1:00-2:00p (.06)
6/5/2019 7:00 AM T 0.0 M M M 79º / 51º A few sprinkles ~ 1:15-1:25p (T) Brief sprinkles/lt shower ~ 4:15p (T)
6/6/2019 7:00 AM 0.10 0.0 M M M 80º / 51º Occ PM sprinkles ~ 1:15-5:45p (T) A shower ~8:30-9:30p (.10)
6/7/2019 7:00 AM 0.00 0.0 M M M 82º / 55º
6/8/2019 7:00 AM 0.04 0.0 M M M 85º / 54º Ts w lt rain ~ 5:00-5:25p (.04)
6/9/2019 7:00 AM 0.05 0.0 M M M 81º / 48º Ts w sprinkles ~ 3:10-3:20p (T) Lt hail (hard, white ice, mostly pea size ~ 4:10p, for ~ 4min) (T) Late evening shower (.05)
6/10/2019 6:30 AM 0.00 0.0 M M M 69º / 45º
6/11/2019 7:00 AM 0.00 0.0 M M M 78º / 51º
6/12/2019 7:00 AM 0.00 0.0 M M M 77º / 52º
6/13/2019 7:00 AM 0.00 0.0 M M M 77º / 52º
6/14/2019 7:00 AM T 0.0 M M M 87º / 60º Some sprinkles ~ 10:15p (T)
6/15/2019 7:00 AM T 0.0 M M M 83º / 56º Ts w sprinkles/lt shower ~ 3:05-3:25p (T)
6/16/2019 7:00 AM 0.00 0.0 M M M 81º / 54º
6/17/2019 7:00 AM 0.07 0.0 M M M 78º / 55º Afternoon showers (.05) Early AM shower (.02)
6/18/2019 7:00 AM 0.32 0.0 M M M 73º / 58º TS ~ 2:40-4:00p (hvy 3:00-3:10p) (.32)
6/19/2019 7:00 AM 0.02 0.0 M M M 75º / 55º Occ sprinkles/showers ~ 11:30a-2:30p (.02)
6/20/2019 7:00 AM 0.00 0.0 M M M 84º / 55º
6/21/2019 7:00 AM 0.01 0.0 M M M 84º / 56º Occ afternoon sprinkles/lt shower ~ 12:30-6:00p (.01)
6/22/2019 7:00 AM 1.06 0.0 M M M 68º / 48º Lt rain ~ 1:00p, becoming mod rain ~ 1:05-1:20p, ending ~ 1:45p (.15) Lt rain/sprinkles ~ 2:05p Overnight showers thru ~ 6:00a (.91)
6/23/2019 7:00 AM 0.31 0.0 M M M 59º / 44º Lt rain/sprinkles ~ 3:20-3:40p. Rain shower ~ 3:50, mod-hvy 4:05-4:15, thru 4:30p (.31)
6/24/2019 7:00 AM 0.01 0.0 M M M 64º / 46º Lt showers ~ 11:30a-12:45p (.01)
6/25/2019 7:00 AM 0.00 0.0 M M M 78º / 53º
6/26/2019 7:00 AM 0.00 0.0 M M M 82º / 54º
6/27/2019 7:00 AM 0.00 0.0 M M M 87º / 56º
6/28/2019 7:00 AM 0.00 0.0 M M M 90º / 58º (1st 90º this year!)
6/29/2019 7:00 AM 0.00 0.0 M M M 92º / 66º
6/30/2019 7:00 AM 0.00 0.0 M M M 92º / 62º
7/1/2019 7:00 AM 0.07 0.0 M M M 87º / 60º Ts ~ 6:15-7:00p (.07)
7/2/2019 7:00 AM 0.84 0.0 M M M 85º / 58º Mod late Evening shower (.84)
7/3/2019 7:00 AM 0.00 0.0 M M M 83º / 55º
7/4/2019 7:00 AM 0.00 0.0 M M M 83º / 58º
7/5/2019 7:00 AM 0.06 0.0 M M M 84º / 60º Ts ~ 6:10-7:05p (.06)
7/6/2019 7:00 AM 0.82 0.0 M M M 85º / 57º significant TS ~ 7:25p w Hail ~ 7:31-7:55p, ending ~ 8:00p (.78, incl hail) Lt rain ( w occ hail stones ~ 8:10-8:30p) (.04)
7/7/2019 7:00 AM 0.00 0.0 M M M 85º / 60º
7/8/2019 7:00 AM T 0.0 M M M 83º / 60º A few sprinkles ~ 8:30p (T)
7/9/2019 7:00 AM 0.00 0.0 M M M 85º / 58º
7/10/2019 7:00 AM 0.00 0.0 M M M 90º / 58º
7/11/2019 7:00 AM 0.00 0.0 M M M 85º / 60º
7/12/2019 7:00 AM 0.00 0.0 M M M 94º / 63º
7/13/2019 7:00 AM 0.00 0.0 M M M 90º / 59º
7/14/2019 7:00 AM T 0.0 M M M 94º / 62º sprinkles ~ 8:40p (T)
7/15/2019 7:00 AM 0.08 0.0 M M M 89º / 61º A few periods of sprinkles ~ 1:30-4:15p and an evening shower (.08)
7/16/2019 7:00 AM 0.03 0.0 M M M 87º / 57º A few sprinkles ~ 2:30-4:15 (T) Lt rain showers ~ 5:45-6:40p (.03)
7/17/2019 7:00 AM 0.00 0.0 M M M 90º / 62º
7/18/2019 7:00 AM 0.00 0.0 M M M 97º / 63º
7/19/2019 7:00 AM 0.00 0.0 M M M 98º / 63º
7/20/2019 7:00 AM 0.00 0.0 M M M 98º / 65º
7/21/2019 7:00 AM 0.26 0.0 M M M 85º / 59º Occ sprinkles ~ 4:00-5:30p, becoming lt rain 5:30-6:45p (.26)
7/22/2019 7:00 AM 0.17 0.0 M M M 83º / 62º Sprinkles ~ 5:30p (T) Ts ~ 8:45-9:50p (.17)
7/23/2019 7:00 AM T 0.0 M M M 81º / 60º Occ sprinkles ~ 3:25-4:30p (T)
7/24/2019 7:00 AM 0.00 0.0 M M M 86º / 62º
7/26/2019 7:00 AM T 0.0 M M M 86º / 59º Some late afternoon sprinkles (T)
7/27/2019 7:00 AM 0.00 0.0 M M M 90º / 66º
7/28/2019 7:00 AM 0.03 0.0 M M M 86º / 63º Ts w lt rain ~ 3:43-3:58p (.03)
7/29/2019 7:00 AM 0.00 0.0 M M M 89º / 58º
7/30/2019 7:00 AM 0.00 0.0 M M M 92º / 59º
7/31/2019 7:00 AM 0.07 0.0 M M M 89º / 63º Lt Ts ~ 5:25-6:05p (.07)
8/1/2019 7:00 AM T 0.0 M M M 86º / 63º Some sprinkles ~ 3:10p (T)
8/6/2019 7:00 AM T 0.0 M M M 87º / 60º Occ sprinkles ~ 3:05-3:50p (T)
8/7/2019 7:00 AM 0.00 0.0 M M M 91º / 64º
8/8/2019 7:00 AM 0.00 0.0 M M M 86º / 64º
8/9/2019 7:00 AM 0.06 0.0 M M M 80º / 64º Occ sprinkles/lt rain ~ 2:15-3:35p (.04) Lt rain shower ~ 6:30p (.02)
8/10/2019 7:00 AM 0.00 0.0 M M M 93º / 66º
8/11/2019 7:00 AM T 0.0 M M M 85º / 65º A few late afternoon sprinkles (T)
8/12/2019 7:00 AM T 0.0 M M M 80º / 64º sprinkles/lt rain shower around 2:00p (T)
8/13/2019 7:00 AM 0.00 0.0 M M M 91º / 57º
8/14/2019 7:00 AM 0.00 0.0 M M M 86º / 60º
8/15/2019 7:00 AM 0.00 0.0 M M M 87º / 57º
8/16/2019 7:00 AM 0.00 0.0 M M M 94º / 62º
8/17/2019 7:00 AM 0.00 0.0 M M M 88º / 62º
8/18/2019 7:00 AM 0.00 0.0 M M M 89º / 60º
8/19/2019 6:45 AM 0.00 0.0 M M M 88º / 60º
8/20/2019 7:00 AM 0.00 0.0 M M M 94º / 62º
8/21/2019 7:00 AM 0.00 0.0 M M M 95º / 62º Boulder record High 98º
8/22/2019 7:00 AM T 0.0 M M M 81º / 59º Occ sprinkles ~ 5:35-6:45p (T)
8/23/2019 7:00 AM 0.00 0.0 M M M 89º / 60º
8/24/2019 7:00 AM 0.00 0.0 M M M 86º / 58º
8/25/2019 7:00 AM 0.00 0.0 M M M 86º / 58º
8/26/2019 7:00 AM 0.00 0.0 M M M 95º / 60º Boulder record High 97º
8/27/2019 7:00 AM 0.00 0.0 M M M 77º / 56º
8/28/2019 7:00 AM 0.00 0.0 M M M 76º / 52º
8/29/2019 7:00 AM 0.00 0.0 M M M 89º / 53º
8/30/2019 7:00 AM 0.00 0.0 M M M 85º / 58º
8/31/2019 7:00 AM 0.00 0.0 M M M 85º / 59º
9/1/2019 7:00 AM 0.00 0.0 M M M 88º/ 58º
9/2/2019 7:00 AM 0.00 0.0 M M M 93º / 62º Boulder record High 98º
9/3/2019 7:00 AM 0.00 0.0 M M M 97º / 62º Boulder record High 100º
9/4/2019 7:00 AM 0.00 0.0 M M M 82º / 62º
9/5/2019 7:00 AM T 0.0 M M M 86º / 62º Sprinkles/lt shower ~ 2:15-2:30p (T)
9/6/2019 7:00 AM T M M M M 93º / 62º Some sprinkles ~ 4:05p (T)



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
1/7/2019 1/19/2019 7:00 AM 13 0.77 M M for period 1/7-19/19 (precipitation only) with NO factoring for evaporation over the period.
4/11/2019 4/15/2019 7:00 PM 5 0.73 4.5 M "Precipitation amount" from the cylinder for the period defined above. Snow is ESTIMATE for the time indicated from nearby neighbors/friends observations. No adjustments for evaporation or 'snow melt'.



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
6/8/2019 4:10 PM Approx 12 stones per sq foot 1/4" Pea Size 1/4" Pea Size Rice Hard|White Ice 4 1min no damage Continuous False Before rain Same time as smaller hail vertical
7/5/2019 7:30 PM This was a significant hail storm with a lot of sm/med sized hail. Not a lot of damage except for leaf damage. Hail was 50-100 pieces per sqft, melting quickly. 1/2" Grape 1/4" Pea Size Rice Hard|White Ice 24 1min minor leaf damage Continuous True After rain After smaller hail 10-20 .25
7/5/2019 8:10 PM This was lt hail approx the same size as 1st storm ... just much less and not as long lasting. 3/8" 1/4" Pea Size 1/4" Pea Size Hard|White Ice 5 1min no damage Continuous True Same time as rain Same time as smaller hail vertical 4