Viewing Station: IA-PW-4 : Grinnell 0.6 NW
Aug 10, 2010 - May 25, 20264,231 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.81"
May 1-25, 2026(25 of 25 days covered by obs)
NOAA Normal
4.07"
Departure from Normal
-1.26" : 69% of Normal
Year-To-Date: 10.27"
Jan 1 to May 25, 2026(144 of 145 days covered by obs)
NOAA Normal
12.15"
Departure from Normal
-1.88" : 85% of Normal
Water Year-To-Date: 12.28"
Oct 1, 2025 to May 25, 2026(196 of 237 days covered by obs)
NOAA Normal
18.51"
Departure from Normal
-6.23" : 66% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.00
1.04
-0.04
Feb
1.22
1.39
-0.17
Mar
2.07
2.12
-0.05
Apr
3.79
3.91
-0.12
May
5.05
4.96
0.09
Jun
5.55
5.40
0.15
Jul
4.25
4.14
0.11
Aug
4.29
4.35
-0.06
Sep
3.69
3.61
0.08
Oct
2.89
2.89
0.00
Nov
2.02
1.98
0.04
Dec
1.45
1.52
-0.07
37.27
37.31
-0.04