Viewing Station: IL-DP-157 : West Chicago 3.5 NNE
Apr 3, 2019 - Nov 7, 20251,535 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.28"
November 1-8, 2025(7 of 8 days covered by obs)
NOAA Normal
0.66"
Departure from Normal
-0.38" : 42% of Normal
Year-To-Date: 24.15"
Jan 1 to Nov 8, 2025(177 of 312 days covered by obs)
NOAA Normal
33.70"
Departure from Normal
-9.55" : 72% of Normal
Water Year-To-Date: 3.26"
Oct 1, 2025 to Nov 8, 2025(23 of 39 days covered by obs)
NOAA Normal
4.00"
Departure from Normal
-0.74" : 81% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.77
1.95
-0.18
Feb
1.76
1.86
-0.10
Mar
2.29
2.27
0.02
Apr
3.77
3.76
0.01
May
4.72
4.75
-0.03
Jun
4.42
4.30
0.12
Jul
3.73
3.69
0.04
Aug
3.91
3.94
-0.03
Sep
3.33
3.33
0.00
Oct
3.34
3.36
-0.02
Nov
2.48
2.54
-0.06
Dec
2.03
2.12
-0.09
37.55
37.87
-0.32