Viewing Station: CO-BO-456 : Boulder 2.2 SSW
Jun 18, 2017 - Dec 11, 20252,965 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.75"
December 1-11, 2025(11 of 11 days covered by obs)
NOAA Normal
0.25"
Departure from Normal
0.50" : 298% of Normal
Year-To-Date: 18.72"
Jan 1 to Dec 11, 2025(336 of 345 days covered by obs)
NOAA Normal
18.64"
Departure from Normal
0.08" : 100% of Normal
Water Year-To-Date: 1.48"
Oct 1, 2025 to Dec 11, 2025(71 of 72 days covered by obs)
NOAA Normal
2.68"
Departure from Normal
-1.20" : 55% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.71
0.73
-0.02
Feb
0.91
0.90
0.01
Mar
1.84
1.83
0.01
Apr
2.72
2.72
0.00
May
2.80
3.05
-0.25
Jun
1.88
1.91
-0.03
Jul
1.84
1.72
0.12
Aug
1.73
1.64
0.09
Sep
1.53
2.03
-0.50
Oct
1.37
1.52
-0.15
Nov
1.06
1.05
0.01
Dec
0.71
0.74
-0.03
19.10
19.84
-0.74