Viewing Station: WY-NT-50 : Casper 0.7 NW
Apr 9, 2013 - Sep 21, 20263,601 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.68"
September 1-21, 2026(20 of 21 days covered by obs)
NOAA Normal
0.66"
Departure from Normal
0.02" : 103% of Normal
Year-To-Date: 7.88"
Jan 1 to Sep 21, 2026(237 of 264 days covered by obs)
NOAA Normal
8.88"
Departure from Normal
-1.00" : 89% of Normal
Water Year-To-Date: 9.67"
Oct 1, 2025 to Sep 21, 2026(314 of 356 days covered by obs)
NOAA Normal
10.92"
Departure from Normal
-1.25" : 89% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.43
0.62
-0.19
Feb
0.46
0.83
-0.37
Mar
0.72
1.14
-0.42
Apr
1.36
1.79
-0.43
May
2.15
2.69
-0.54
Jun
1.30
1.49
-0.19
Jul
1.02
1.14
-0.12
Aug
0.78
0.91
-0.13
Sep
0.94
1.09
-0.15
Oct
1.05
1.43
-0.38
Nov
0.52
0.72
-0.20
Dec
0.47
0.79
-0.32
11.20
14.64
-3.44