Viewing Station: CO-BO-248 : Niwot 2.3 W
Aug 13, 2007 - Dec 21, 20255,933 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.60"
December 1-21, 2025(21 of 21 days covered by obs)
NOAA Normal
0.38"
Departure from Normal
0.22" : 158% of Normal
Year-To-Date: 12.90"
Jan 1 to Dec 21, 2025(349 of 355 days covered by obs)
NOAA Normal
17.00"
Departure from Normal
-4.10" : 76% of Normal
Water Year-To-Date: 1.12"
Oct 1, 2025 to Dec 21, 2025(81 of 82 days covered by obs)
NOAA Normal
2.50"
Departure from Normal
-1.38" : 45% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.57
0.51
0.06
Feb
0.69
0.60
0.09
Mar
1.53
1.37
0.16
Apr
2.34
2.05
0.29
May
2.79
2.54
0.25
Jun
1.83
1.64
0.19
Jul
1.67
1.40
0.27
Aug
1.66
1.31
0.35
Sep
1.42
1.61
-0.19
Oct
1.25
1.15
0.10
Nov
0.87
0.77
0.10
Dec
0.56
0.51
0.05
17.18
15.46
1.72