Viewing Station: WY-NT-98 : Casper 3.9 WSW
Mar 24, 2023 - Sep 16, 2025882 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.53"
September 1-16, 2025(16 of 16 days covered by obs)
NOAA Normal
0.51"
Departure from Normal
0.02" : 104% of Normal
Year-To-Date: 7.70"
Jan 1 to Sep 16, 2025(255 of 259 days covered by obs)
NOAA Normal
8.81"
Departure from Normal
-1.11" : 87% of Normal
Water Year-To-Date: 10.45"
Oct 1, 2024 to Sep 16, 2025(347 of 351 days covered by obs)
NOAA Normal
10.88"
Departure from Normal
-0.43" : 96% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.47
0.64
-0.17
Feb
0.46
0.93
-0.47
Mar
0.72
1.25
-0.53
Apr
1.41
2.00
-0.59
May
2.15
2.75
-0.60
Jun
1.30
1.54
-0.24
Jul
1.00
1.01
-0.01
Aug
0.79
0.96
-0.17
Sep
0.96
1.10
-0.14
Oct
1.06
1.51
-0.45
Nov
0.53
0.76
-0.23
Dec
0.48
0.84
-0.36
11.33
15.29
-3.96