Viewing Station: IL-WL-175 : Joliet 0.7 WNW
Jul 8, 2021 - Sep 22, 20261,896 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.95"
September 1-23, 2026(21 of 23 days covered by obs)
NOAA Normal
2.51"
Departure from Normal
2.44" : 197% of Normal
Year-To-Date: 45.17"
Jan 1 to Sep 23, 2026(263 of 266 days covered by obs)
NOAA Normal
29.54"
Departure from Normal
15.63" : 153% of Normal
Water Year-To-Date: 51.19"
Oct 1, 2025 to Sep 23, 2026(355 of 358 days covered by obs)
NOAA Normal
37.51"
Departure from Normal
13.68" : 136% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.02
2.04
-0.02
Feb
1.76
1.87
-0.11
Mar
2.35
2.36
-0.01
Apr
3.79
3.83
-0.04
May
4.57
4.61
-0.04
Jun
4.41
4.45
-0.04
Jul
4.16
4.20
-0.04
Aug
3.97
3.93
0.04
Sep
3.27
3.28
-0.01
Oct
3.30
3.28
0.02
Nov
2.57
2.47
0.10
Dec
2.10
2.10
0.00
38.27
38.42
-0.15