Viewing Station: CO-BO-476 : Boulder 2.9 ESE
Jun 12, 2017 - Sep 17, 20252,017 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.57"
September 1-17, 2025(16 of 17 days covered by obs)
NOAA Normal
0.80"
Departure from Normal
-0.23" : 71% of Normal
Year-To-Date: 14.43"
Jan 1 to Sep 17, 2025(253 of 260 days covered by obs)
NOAA Normal
14.12"
Departure from Normal
0.31" : 102% of Normal
Water Year-To-Date: 16.70"
Oct 1, 2024 to Sep 17, 2025(346 of 352 days covered by obs)
NOAA Normal
16.93"
Departure from Normal
-0.23" : 99% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.61
0.61
0.00
Feb
0.75
0.73
0.02
Mar
1.61
1.59
0.02
Apr
2.43
2.37
0.06
May
2.72
2.70
0.02
Jun
1.82
1.63
0.19
Jul
1.70
1.60
0.10
Aug
1.68
1.41
0.27
Sep
1.42
1.82
-0.40
Oct
1.28
1.34
-0.06
Nov
0.94
0.91
0.03
Dec
0.59
0.61
-0.02
17.55
17.32
0.23