Viewing Station: CO-BO-481 : Boulder 3.6 SSE
Jul 9, 2017 - Sep 17, 20251,568 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.23"
September 1-17, 2025(17 of 17 days covered by obs)
NOAA Normal
0.82"
Departure from Normal
0.41" : 151% of Normal
Year-To-Date: 15.38"
Jan 1 to Sep 17, 2025(252 of 260 days covered by obs)
NOAA Normal
14.54"
Departure from Normal
0.84" : 106% of Normal
Water Year-To-Date: 18.20"
Oct 1, 2024 to Sep 17, 2025(337 of 352 days covered by obs)
NOAA Normal
17.55"
Departure from Normal
0.65" : 104% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.66
0.67
-0.01
Feb
0.81
0.83
-0.02
Mar
1.72
1.76
-0.04
Apr
2.56
2.65
-0.09
May
2.74
2.92
-0.18
Jun
1.80
1.80
0.00
Jul
1.73
1.70
0.03
Aug
1.70
1.65
0.05
Sep
1.44
1.99
-0.55
Oct
1.32
1.47
-0.15
Nov
1.03
1.01
0.02
Dec
0.66
0.73
-0.07
18.17
19.18
-1.01