Viewing Station: IA-ID-4 : Arthur 3.7 SSW
Dec 18, 2016 - Jul 20, 20263,322 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.45"
July 1-21, 2026(20 of 21 days covered by obs)
NOAA Normal
2.61"
Departure from Normal
-1.16" : 56% of Normal
Year-To-Date: 13.39"
Jan 1 to Jul 21, 2026(193 of 202 days covered by obs)
NOAA Normal
18.91"
Departure from Normal
-5.52" : 71% of Normal
Water Year-To-Date: 16.86"
Oct 1, 2025 to Jul 21, 2026(277 of 294 days covered by obs)
NOAA Normal
23.88"
Departure from Normal
-7.02" : 71% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.76
0.74
0.02
Feb
0.93
0.89
0.04
Mar
1.78
1.78
0.00
Apr
3.44
3.33
0.11
May
4.48
4.48
0.00
Jun
4.91
4.93
-0.02
Jul
3.85
3.74
0.11
Aug
4.23
4.25
-0.02
Sep
3.21
3.03
0.18
Oct
2.41
2.29
0.12
Nov
1.48
1.39
0.09
Dec
1.08
1.09
-0.01
32.56
31.94
0.62