Viewing Station: IL-WL-103 : Joliet 1.8 NNE
May 18, 2012 - Aug 28, 20251,265 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 8.30"
August 1-29, 2025(28 of 29 days covered by obs)
NOAA Normal
3.74"
Departure from Normal
4.56" : 222% of Normal
Year-To-Date: 27.73"
Jan 1 to Aug 29, 2025(240 of 241 days covered by obs)
NOAA Normal
26.78"
Departure from Normal
0.95" : 104% of Normal
Water Year-To-Date: 33.87"
Oct 1, 2024 to Aug 29, 2025(332 of 333 days covered by obs)
NOAA Normal
34.84"
Departure from Normal
-0.97" : 97% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.04
2.06
-0.02
Feb
1.79
1.88
-0.09
Mar
2.34
2.40
-0.06
Apr
3.81
3.85
-0.04
May
4.50
4.64
-0.14
Jun
4.42
4.49
-0.07
Jul
4.14
4.21
-0.07
Aug
4.00
3.97
0.03
Sep
3.32
3.28
0.04
Oct
3.34
3.32
0.02
Nov
2.60
2.47
0.13
Dec
2.12
2.11
0.01
38.42
38.68
-0.26