Viewing Station: CO-BO-437 : Boulder 2.1 W
Jun 23, 2017 - Jun 21, 20262,984 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.13"
June 1-21, 2026(21 of 21 days covered by obs)
NOAA Normal
1.30"
Departure from Normal
-1.17" : 10% of Normal
Year-To-Date: 4.06"
Jan 1 to Jun 21, 2026(165 of 172 days covered by obs)
NOAA Normal
9.86"
Departure from Normal
-5.80" : 41% of Normal
Water Year-To-Date: 5.50"
Oct 1, 2025 to Jun 21, 2026(256 of 264 days covered by obs)
NOAA Normal
12.87"
Departure from Normal
-7.37" : 43% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.65
0.74
-0.09
Feb
0.85
0.98
-0.13
Mar
1.74
1.87
-0.13
Apr
2.56
2.82
-0.26
May
2.76
3.24
-0.48
Jun
1.86
2.13
-0.27
Jul
1.77
1.71
0.06
Aug
1.67
1.62
0.05
Sep
1.53
2.08
-0.55
Oct
1.36
1.61
-0.25
Nov
1.00
1.07
-0.07
Dec
0.65
0.78
-0.13
18.40
20.65
-2.25