Viewing Station: IL-KN-67 : St. Charles 6.0 NW
May 11, 2008 - Sep 21, 20266,991 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.46"
September 1-22, 2026(21 of 22 days covered by obs)
NOAA Normal
2.46"
Departure from Normal
1.00" : 140% of Normal
Year-To-Date: 32.89"
Jan 1 to Sep 22, 2026(264 of 265 days covered by obs)
NOAA Normal
28.90"
Departure from Normal
3.99" : 114% of Normal
Water Year-To-Date: 39.35"
Oct 1, 2025 to Sep 22, 2026(356 of 357 days covered by obs)
NOAA Normal
36.71"
Departure from Normal
2.64" : 107% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.74
1.85
-0.11
Feb
1.77
1.80
-0.03
Mar
2.26
2.29
-0.03
Apr
3.70
3.73
-0.03
May
4.74
4.87
-0.13
Jun
4.51
4.39
0.12
Jul
3.84
3.80
0.04
Aug
3.88
3.95
-0.07
Sep
3.36
3.44
-0.08
Oct
3.29
3.26
0.03
Nov
2.50
2.52
-0.02
Dec
2.02
2.15
-0.13
37.61
38.05
-0.44