Viewing Station: IA-PK-97 : Ankeny 1.5 NNE
Aug 22, 2018 - Sep 15, 20252,565 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.34"
September 1-15, 2025(15 of 15 days covered by obs)
NOAA Normal
1.77"
Departure from Normal
-1.43" : 19% of Normal
Year-To-Date: 32.96"
Jan 1 to Sep 15, 2025(257 of 258 days covered by obs)
NOAA Normal
28.15"
Departure from Normal
4.81" : 117% of Normal
Water Year-To-Date: 39.79"
Oct 1, 2024 to Sep 15, 2025(348 of 350 days covered by obs)
NOAA Normal
33.89"
Departure from Normal
5.90" : 117% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.88
0.89
-0.01
Feb
1.10
1.08
0.02
Mar
2.08
2.01
0.07
Apr
3.82
3.76
0.06
May
5.08
5.05
0.03
Jun
5.18
5.37
-0.19
Jul
4.07
4.21
-0.14
Aug
4.17
4.11
0.06
Sep
3.54
3.34
0.20
Oct
2.61
2.59
0.02
Nov
1.84
1.78
0.06
Dec
1.29
1.31
-0.02
35.66
35.50
0.16