Viewing Station: CO-BO-248 : Niwot 2.3 W
Aug 13, 2007 - Sep 16, 20255,839 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.31"
September 1-16, 2025(16 of 16 days covered by obs)
NOAA Normal
0.76"
Departure from Normal
-0.45" : 41% of Normal
Year-To-Date: 10.45"
Jan 1 to Sep 16, 2025(255 of 259 days covered by obs)
NOAA Normal
13.84"
Departure from Normal
-3.39" : 76% of Normal
Water Year-To-Date: 12.25"
Oct 1, 2024 to Sep 16, 2025(347 of 351 days covered by obs)
NOAA Normal
16.52"
Departure from Normal
-4.27" : 74% 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