Viewing Station: WY-NT-111 : Casper 7.5 W
Mar 28, 2025 - Sep 10, 2026494 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.19"
September 1-10, 2026(10 of 10 days covered by obs)
NOAA Normal
0.31"
Departure from Normal
-0.12" : 61% of Normal
Year-To-Date: 6.73"
Jan 1 to Sep 10, 2026(247 of 253 days covered by obs)
NOAA Normal
8.62"
Departure from Normal
-1.89" : 78% of Normal
Water Year-To-Date: 8.73"
Oct 1, 2025 to Sep 10, 2026(335 of 345 days covered by obs)
NOAA Normal
10.84"
Departure from Normal
-2.11" : 81% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.48
0.63
-0.15
Feb
0.50
0.91
-0.41
Mar
0.77
1.23
-0.46
Apr
1.39
1.94
-0.55
May
2.14
2.45
-0.31
Jun
1.27
1.42
-0.15
Jul
1.01
1.13
-0.12
Aug
0.75
0.87
-0.12
Sep
0.94
0.97
-0.03
Oct
1.11
1.48
-0.37
Nov
0.57
0.75
-0.18
Dec
0.54
0.82
-0.28
11.47
14.60
-3.13