Viewing Station: CO-BO-220 : Boulder 4.7 ENE
May 26, 2006 - Sep 23, 20266,961 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.20"
September 1-23, 2026(22 of 23 days covered by obs)
NOAA Normal
1.09"
Departure from Normal
-0.89" : 18% of Normal
Year-To-Date: 7.35"
Jan 1 to Sep 23, 2026(264 of 266 days covered by obs)
NOAA Normal
14.45"
Departure from Normal
-7.10" : 51% of Normal
Water Year-To-Date: 8.68"
Oct 1, 2025 to Sep 23, 2026(356 of 358 days covered by obs)
NOAA Normal
17.21"
Departure from Normal
-8.53" : 50% 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