Viewing Station: IA-WP-13 : Ottumwa 2.2 ENE
Jan 30, 2023 - Sep 15, 2025930 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.21"
September 1-16, 2025(15 of 16 days covered by obs)
NOAA Normal
1.88"
Departure from Normal
-1.67" : 11% of Normal
Year-To-Date: 24.70"
Jan 1 to Sep 16, 2025(257 of 259 days covered by obs)
NOAA Normal
28.72"
Departure from Normal
-4.02" : 86% of Normal
Water Year-To-Date: 34.78"
Oct 1, 2024 to Sep 16, 2025(349 of 351 days covered by obs)
NOAA Normal
35.12"
Departure from Normal
-0.34" : 99% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.20
1.22
-0.02
Feb
1.48
1.61
-0.13
Mar
2.23
2.21
0.02
Apr
3.72
3.59
0.13
May
5.03
5.18
-0.15
Jun
5.05
5.31
-0.26
Jul
4.01
3.99
0.02
Aug
4.12
4.22
-0.10
Sep
3.52
3.59
-0.07
Oct
2.80
2.64
0.16
Nov
2.07
2.16
-0.09
Dec
1.53
1.66
-0.13
36.76
37.38
-0.62