Viewing Station: IA-WY-4 : Promise City 0.6 W
Sep 8, 2018 - Sep 28, 20262,391 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 5.73"
September 1-29, 2026(28 of 29 days covered by obs)
NOAA Normal
3.67"
Departure from Normal
2.06" : 156% of Normal
Year-To-Date: 35.43"
Jan 1 to Sep 29, 2026(237 of 272 days covered by obs)
NOAA Normal
31.21"
Departure from Normal
4.22" : 114% of Normal
Water Year-To-Date: 40.55"
Oct 1, 2025 to Sep 29, 2026(326 of 364 days covered by obs)
NOAA Normal
37.80"
Departure from Normal
2.75" : 107% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.05
1.09
-0.04
Feb
1.47
1.50
-0.03
Mar
2.15
2.24
-0.09
Apr
3.84
3.90
-0.06
May
5.34
5.37
-0.03
Jun
5.14
5.23
-0.09
Jul
4.33
4.50
-0.17
Aug
4.22
4.26
-0.04
Sep
3.80
3.82
-0.02
Oct
2.95
2.89
0.06
Nov
2.11
2.08
0.03
Dec
1.53
1.53
0.00
37.93
38.41
-0.48