Viewing Station: WY-NT-92 : Casper 0.7 WSW
Mar 21, 2022 - Sep 20, 20261,636 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.50"
September 1-20, 2026(20 of 20 days covered by obs)
NOAA Normal
0.67"
Departure from Normal
-0.17" : 75% of Normal
Year-To-Date: 8.09"
Jan 1 to Sep 20, 2026(259 of 263 days covered by obs)
NOAA Normal
9.42"
Departure from Normal
-1.33" : 86% of Normal
Water Year-To-Date: 10.44"
Oct 1, 2025 to Sep 20, 2026(351 of 355 days covered by obs)
NOAA Normal
11.61"
Departure from Normal
-1.17" : 90% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.53
0.65
-0.12
Feb
0.49
0.86
-0.37
Mar
0.76
1.19
-0.43
Apr
1.53
1.85
-0.32
May
2.24
2.79
-0.55
Jun
1.34
1.53
-0.19
Jul
1.02
1.14
-0.12
Aug
0.84
0.93
-0.09
Sep
1.00
1.10
-0.10
Oct
1.12
1.48
-0.36
Nov
0.56
0.75
-0.19
Dec
0.51
0.82
-0.31
11.94
15.09
-3.15