Viewing Station: WY-LM-121 : Cheyenne 11.1 NW
Jan 1, 2012 - Sep 20, 20265,336 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.13"
September 1-20, 2026(20 of 20 days covered by obs)
NOAA Normal
0.96"
Departure from Normal
-0.83" : 14% of Normal
Year-To-Date: 7.71"
Jan 1 to Sep 20, 2026(263 of 263 days covered by obs)
NOAA Normal
12.85"
Departure from Normal
-5.14" : 60% of Normal
Water Year-To-Date: 8.55"
Oct 1, 2025 to Sep 20, 2026(355 of 355 days covered by obs)
NOAA Normal
15.28"
Departure from Normal
-6.73" : 56% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.43
0.25
0.18
Feb
0.58
0.44
0.14
Mar
1.05
0.72
0.33
Apr
1.90
1.50
0.40
May
2.61
2.60
0.01
Jun
2.11
2.17
-0.06
Jul
1.79
1.84
-0.05
Aug
1.42
1.71
-0.29
Sep
1.44
1.77
-0.33
Oct
1.13
0.97
0.16
Nov
0.70
0.53
0.17
Dec
0.60
0.46
0.14
15.76
14.96
0.80