Viewing Station: IA-ST-42 : Riverdale 0.5 N
Sep 18, 2017 - May 8, 20251,465 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.97"
May 1-9, 2025(5 of 9 days covered by obs)
NOAA Normal
1.36"
Departure from Normal
-0.39" : 71% of Normal
Year-To-Date: 8.54"
Jan 1 to May 9, 2025(90 of 129 days covered by obs)
NOAA Normal
10.57"
Departure from Normal
-2.03" : 81% of Normal
Water Year-To-Date: 12.95"
Oct 1, 2024 to May 9, 2025(161 of 221 days covered by obs)
NOAA Normal
17.46"
Departure from Normal
-4.51" : 74% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.42
1.48
-0.06
Feb
1.66
1.73
-0.07
Mar
2.44
2.47
-0.03
Apr
3.69
3.61
0.08
May
4.68
4.79
-0.11
Jun
4.82
4.74
0.08
Jul
4.05
4.23
-0.18
Aug
3.99
3.85
0.14
Sep
3.44
3.36
0.08
Oct
2.79
2.75
0.04
Nov
2.25
2.21
0.04
Dec
1.85
1.96
-0.11
37.08
37.18
-0.10