Viewing Station: CO-BO-286 : Boulder 3.5 S
May 3, 2010 - Sep 17, 20255,632 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.14"
September 1-17, 2025(17 of 17 days covered by obs)
NOAA Normal
0.87"
Departure from Normal
0.27" : 131% of Normal
Year-To-Date: 16.81"
Jan 1 to Sep 17, 2025(260 of 260 days covered by obs)
NOAA Normal
15.30"
Departure from Normal
1.51" : 110% of Normal
Water Year-To-Date: 20.11"
Oct 1, 2024 to Sep 17, 2025(352 of 352 days covered by obs)
NOAA Normal
18.44"
Departure from Normal
1.67" : 109% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.71
0.76
-0.05
Feb
0.91
0.93
-0.02
Mar
1.84
1.89
-0.05
Apr
2.72
2.93
-0.21
May
2.80
3.18
-0.38
Jun
1.88
1.87
0.01
Jul
1.84
1.81
0.03
Aug
1.73
1.67
0.06
Sep
1.53
2.06
-0.53
Oct
1.37
1.54
-0.17
Nov
1.06
1.07
-0.01
Dec
0.71
0.75
-0.04
19.10
20.46
-1.36