Viewing Station: IA-LC-10 : Williamson 0.3 N
Mar 22, 2019 - Sep 16, 20262,407 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.66"
September 1-16, 2026(6 of 16 days covered by obs)
NOAA Normal
1.89"
Departure from Normal
2.77" : 246% of Normal
Year-To-Date: 33.26"
Jan 1 to Sep 16, 2026(50 of 259 days covered by obs)
NOAA Normal
29.09"
Departure from Normal
4.17" : 114% of Normal
Water Year-To-Date: 36.14"
Oct 1, 2025 to Sep 16, 2026(112 of 351 days covered by obs)
NOAA Normal
35.29"
Departure from Normal
0.85" : 102% 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