Viewing Station: WY-NT-100 : Casper 1.7 W
May 1, 2023 - Oct 20, 2025765 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.30"
October 1-21, 2025(20 of 21 days covered by obs)
NOAA Normal
0.76"
Departure from Normal
0.54" : 171% of Normal
Year-To-Date: 9.13"
Jan 1 to Oct 21, 2025(249 of 294 days covered by obs)
NOAA Normal
10.51"
Departure from Normal
-1.38" : 87% of Normal
Water Year-To-Date: 1.30"
Oct 1, 2025 to Oct 21, 2025(20 of 21 days covered by obs)
NOAA Normal
0.76"
Departure from Normal
0.54" : 171% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.53
0.66
-0.13
Feb
0.49
0.89
-0.40
Mar
0.76
1.22
-0.46
Apr
1.53
1.95
-0.42
May
2.24
2.84
-0.60
Jun
1.34
1.57
-0.23
Jul
1.02
1.13
-0.11
Aug
0.84
0.95
-0.11
Sep
1.00
1.11
-0.11
Oct
1.12
1.54
-0.42
Nov
0.56
0.77
-0.21
Dec
0.51
0.85
-0.34
11.94
15.48
-3.54