Viewing Station: CO-BO-220 : Boulder 4.7 ENE
May 26, 2006 - Sep 15, 20256,597 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.32"
September 1-16, 2025(15 of 16 days covered by obs)
NOAA Normal
0.76"
Departure from Normal
-0.44" : 42% of Normal
Year-To-Date: 12.99"
Jan 1 to Sep 16, 2025(256 of 259 days covered by obs)
NOAA Normal
14.12"
Departure from Normal
-1.13" : 92% of Normal
Water Year-To-Date: 15.62"
Oct 1, 2024 to Sep 16, 2025(348 of 351 days covered by obs)
NOAA Normal
16.88"
Departure from Normal
-1.26" : 93% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.60
0.54
0.06
Feb
0.71
0.66
0.05
Mar
1.58
1.53
0.05
Apr
2.41
2.21
0.20
May
2.82
2.49
0.33
Jun
1.84
1.60
0.24
Jul
1.70
1.56
0.14
Aug
1.70
1.32
0.38
Sep
1.42
1.66
-0.24
Oct
1.26
1.20
0.06
Nov
0.92
0.83
0.09
Dec
0.58
0.58
0.00
17.54
16.18
1.36