Viewing Station: IA-LC-10 : Williamson 0.3 N
Mar 22, 2019 - Sep 11, 20252,276 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.07"
September 1-13, 2025(11 of 13 days covered by obs)
NOAA Normal
1.54"
Departure from Normal
-1.47" : 5% of Normal
Year-To-Date: 24.38"
Jan 1 to Sep 13, 2025(250 of 256 days covered by obs)
NOAA Normal
28.74"
Departure from Normal
-4.36" : 85% of Normal
Water Year-To-Date: 31.78"
Oct 1, 2024 to Sep 13, 2025(338 of 348 days covered by obs)
NOAA Normal
34.94"
Departure from Normal
-3.16" : 91% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.01
1.00
0.01
Feb
1.34
1.37
-0.03
Mar
2.04
2.09
-0.05
Apr
3.97
3.96
0.01
May
5.14
5.37
-0.23
Jun
5.07
5.19
-0.12
Jul
4.38
4.36
0.02
Aug
4.25
4.37
-0.12
Sep
3.55
3.65
-0.10
Oct
2.82
2.79
0.03
Nov
1.98
2.00
-0.02
Dec
1.40
1.39
0.01
36.95
37.54
-0.59