Viewing Station: CO-BO-286 : Boulder 3.5 S
May 3, 2010 - May 19, 20265,875 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.01"
May 1-19, 2026(19 of 19 days covered by obs)
NOAA Normal
1.72"
Departure from Normal
1.29" : 175% of Normal
Year-To-Date: 5.59"
Jan 1 to May 19, 2026(139 of 139 days covered by obs)
NOAA Normal
7.90"
Departure from Normal
-2.31" : 71% of Normal
Water Year-To-Date: 7.21"
Oct 1, 2025 to May 19, 2026(231 of 231 days covered by obs)
NOAA Normal
11.04"
Departure from Normal
-3.83" : 65% 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