Viewing Station: CO-BO-457 : Boulder 0.7 ENE
Nov 20, 2017 - Dec 20, 20252,156 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.58"
December 1-20, 2025(20 of 20 days covered by obs)
NOAA Normal
0.41"
Departure from Normal
0.17" : 140% of Normal
Year-To-Date: 17.01"
Jan 1 to Dec 20, 2025(346 of 354 days covered by obs)
NOAA Normal
17.69"
Departure from Normal
-0.68" : 96% of Normal
Water Year-To-Date: 1.30"
Oct 1, 2025 to Dec 20, 2025(79 of 81 days covered by obs)
NOAA Normal
2.73"
Departure from Normal
-1.43" : 48% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.64
0.61
0.03
Feb
0.78
0.75
0.03
Mar
1.68
1.61
0.07
Apr
2.49
2.49
0.00
May
2.73
2.81
-0.08
Jun
1.82
1.78
0.04
Jul
1.71
1.61
0.10
Aug
1.67
1.51
0.16
Sep
1.44
1.97
-0.53
Oct
1.32
1.31
0.01
Nov
1.00
0.91
0.09
Dec
0.64
0.61
0.03
17.92
17.97
-0.05