Viewing Station: CO-BO-494 : Boulder 2.5 SW
Mar 25, 2018 - Sep 17, 20251,502 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.69"
September 1-17, 2025(13 of 17 days covered by obs)
NOAA Normal
0.87"
Departure from Normal
-0.18" : 80% of Normal
Year-To-Date: 14.96"
Jan 1 to Sep 17, 2025(185 of 260 days covered by obs)
NOAA Normal
14.73"
Departure from Normal
0.23" : 102% of Normal
Water Year-To-Date: 18.15"
Oct 1, 2024 to Sep 17, 2025(251 of 352 days covered by obs)
NOAA Normal
17.74"
Departure from Normal
0.41" : 102% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.65
0.80
-0.15
Feb
0.85
1.04
-0.19
Mar
1.74
1.97
-0.23
Apr
2.56
2.91
-0.35
May
2.76
3.25
-0.49
Jun
1.86
2.05
-0.19
Jul
1.77
1.75
0.02
Aug
1.67
1.77
-0.10
Sep
1.53
2.14
-0.61
Oct
1.36
1.61
-0.25
Nov
1.00
1.12
-0.12
Dec
0.65
0.82
-0.17
18.40
21.23
-2.83