Viewing Station: IL-WD-18 : Prophetstown 0.2 SW
Apr 7, 2018 - Aug 29, 20262,691 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 8.07"
August 1-29, 2026(29 of 29 days covered by obs)
NOAA Normal
3.67"
Departure from Normal
4.40" : 220% of Normal
Year-To-Date: 34.67"
Jan 1 to Aug 29, 2026(240 of 241 days covered by obs)
NOAA Normal
26.86"
Departure from Normal
7.81" : 129% of Normal
Water Year-To-Date: 42.34"
Oct 1, 2025 to Aug 29, 2026(332 of 333 days covered by obs)
NOAA Normal
34.14"
Departure from Normal
8.20" : 124% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.63
1.64
-0.01
Feb
1.70
1.74
-0.04
Mar
2.50
2.53
-0.03
Apr
3.71
3.72
-0.01
May
4.62
4.81
-0.19
Jun
4.93
4.91
0.02
Jul
4.10
4.03
0.07
Aug
3.92
4.18
-0.26
Sep
3.76
3.47
0.29
Oct
2.86
3.02
-0.16
Nov
2.36
2.14
0.22
Dec
2.06
2.01
0.05
38.15
38.20
-0.05