Viewing Station: IL-WF-16 : Congerville 0.6 WSW
Apr 11, 2013 - Sep 20, 20263,812 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.34"
September 1-20, 2026(20 of 20 days covered by obs)
NOAA Normal
2.13"
Departure from Normal
0.21" : 110% of Normal
Year-To-Date: 39.37"
Jan 1 to Sep 20, 2026(263 of 263 days covered by obs)
NOAA Normal
28.72"
Departure from Normal
10.65" : 137% of Normal
Water Year-To-Date: 46.19"
Oct 1, 2025 to Sep 20, 2026(355 of 355 days covered by obs)
NOAA Normal
36.72"
Departure from Normal
9.47" : 126% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.09
2.10
-0.01
Feb
1.82
1.85
-0.03
Mar
2.56
2.53
0.03
Apr
3.80
3.72
0.08
May
4.56
4.61
-0.05
Jun
4.07
4.03
0.04
Jul
4.08
3.80
0.28
Aug
3.61
3.54
0.07
Sep
3.20
3.24
-0.04
Oct
3.16
3.12
0.04
Nov
2.71
2.69
0.02
Dec
2.13
2.09
0.04
37.79
37.32
0.47