Viewing Station: IA-PW-4 : Grinnell 0.6 NW
Aug 10, 2010 - Aug 18, 20264,316 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 5.01"
August 1-18, 2026(18 of 18 days covered by obs)
NOAA Normal
2.49"
Departure from Normal
2.52" : 201% of Normal
Year-To-Date: 25.41"
Jan 1 to Aug 18, 2026(229 of 230 days covered by obs)
NOAA Normal
25.42"
Departure from Normal
-0.01" : 100% of Normal
Water Year-To-Date: 27.42"
Oct 1, 2025 to Aug 18, 2026(281 of 322 days covered by obs)
NOAA Normal
31.78"
Departure from Normal
-4.36" : 86% 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