Viewing Station: IL-WD-22 : Rock Falls 3.1 S
Dec 31, 2020 - Apr 9, 20261,765 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.66"
April 1-9, 2026(9 of 9 days covered by obs)
NOAA Normal
1.10"
Departure from Normal
2.56" : 332% of Normal
Year-To-Date: 7.65"
Jan 1 to Apr 9, 2026(95 of 99 days covered by obs)
NOAA Normal
6.91"
Departure from Normal
0.74" : 111% of Normal
Water Year-To-Date: 16.10"
Oct 1, 2025 to Apr 9, 2026(183 of 191 days covered by obs)
NOAA Normal
14.18"
Departure from Normal
1.92" : 114% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.64
1.68
-0.04
Feb
1.75
1.70
0.05
Mar
2.42
2.37
0.05
Apr
3.68
3.79
-0.11
May
4.64
4.83
-0.19
Jun
5.09
5.27
-0.18
Jul
3.94
4.17
-0.23
Aug
3.96
4.23
-0.27
Sep
3.60
3.65
-0.05
Oct
2.85
2.81
0.04
Nov
2.36
2.28
0.08
Dec
2.06
1.94
0.12
37.99
38.72
-0.73