Viewing Station: IA-ID-4 : Arthur 3.7 SSW
Dec 18, 2016 - Apr 20, 20263,234 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.06"
April 1-21, 2026(19 of 21 days covered by obs)
NOAA Normal
2.41"
Departure from Normal
-0.35" : 86% of Normal
Year-To-Date: 5.27"
Jan 1 to Apr 21, 2026(105 of 111 days covered by obs)
NOAA Normal
5.88"
Departure from Normal
-0.61" : 90% of Normal
Water Year-To-Date: 8.74"
Oct 1, 2025 to Apr 21, 2026(189 of 203 days covered by obs)
NOAA Normal
10.85"
Departure from Normal
-2.11" : 81% 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