Viewing Station: CO-BO-547 : Boulder 1.7 N
Feb 8, 2021 - Sep 18, 20261,539 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.65"
September 1-18, 2026(18 of 18 days covered by obs)
NOAA Normal
0.90"
Departure from Normal
-0.25" : 72% of Normal
Year-To-Date: 9.96"
Jan 1 to Sep 18, 2026(250 of 261 days covered by obs)
NOAA Normal
14.68"
Departure from Normal
-4.72" : 68% of Normal
Water Year-To-Date: 11.84"
Oct 1, 2025 to Sep 18, 2026(337 of 353 days covered by obs)
NOAA Normal
17.64"
Departure from Normal
-5.80" : 67% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.64
0.61
0.03
Feb
0.79
0.74
0.05
Mar
1.71
1.63
0.08
Apr
2.55
2.47
0.08
May
2.79
2.79
0.00
Jun
1.85
1.78
0.07
Jul
1.77
1.59
0.18
Aug
1.68
1.51
0.17
Sep
1.50
1.90
-0.40
Oct
1.37
1.34
0.03
Nov
0.97
0.91
0.06
Dec
0.62
0.62
0.00
18.24
17.89
0.35