Viewing Station: IL-MCD-7 : Colchester 3.5 NE
Mar 25, 2010 - Sep 20, 20265,967 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.18"
September 1-21, 2026(20 of 21 days covered by obs)
NOAA Normal
2.55"
Departure from Normal
-0.37" : 86% of Normal
Year-To-Date: 39.05"
Jan 1 to Sep 21, 2026(263 of 264 days covered by obs)
NOAA Normal
30.16"
Departure from Normal
8.89" : 129% of Normal
Water Year-To-Date: 43.56"
Oct 1, 2025 to Sep 21, 2026(355 of 356 days covered by obs)
NOAA Normal
37.79"
Departure from Normal
5.77" : 115% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.71
1.80
-0.09
Feb
1.85
1.88
-0.03
Mar
2.40
2.30
0.10
Apr
3.93
3.87
0.06
May
5.11
4.99
0.12
Jun
4.84
4.77
0.07
Jul
4.11
4.07
0.04
Aug
3.66
3.48
0.18
Sep
3.64
3.70
-0.06
Oct
3.11
3.08
0.03
Nov
2.58
2.60
-0.02
Dec
1.94
1.89
0.05
38.88
38.43
0.45