Viewing Station: IL-WL-174 : Joliet 0.8 E
Jul 13, 2021 - Sep 23, 20261,332 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.79"
September 1-23, 2026(23 of 23 days covered by obs)
NOAA Normal
2.52"
Departure from Normal
2.27" : 190% of Normal
Year-To-Date: 35.08"
Jan 1 to Sep 23, 2026(182 of 266 days covered by obs)
NOAA Normal
29.64"
Departure from Normal
5.44" : 118% of Normal
Water Year-To-Date: 37.95"
Oct 1, 2025 to Sep 23, 2026(253 of 358 days covered by obs)
NOAA Normal
37.62"
Departure from Normal
0.33" : 101% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.02
2.04
-0.02
Feb
1.77
1.87
-0.10
Mar
2.36
2.36
0.00
Apr
3.79
3.82
-0.03
May
4.58
4.61
-0.03
Jun
4.43
4.44
-0.01
Jul
4.16
4.21
-0.05
Aug
4.01
3.93
0.08
Sep
3.29
3.28
0.01
Oct
3.31
3.28
0.03
Nov
2.57
2.47
0.10
Dec
2.10
2.09
0.01
38.39
38.40
-0.01