Viewing Station: IL-DP-157 : West Chicago 3.5 NNE
Apr 3, 2019 - Jun 26, 20261,710 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 7.74"
June 1-26, 2026(24 of 26 days covered by obs)
NOAA Normal
3.83"
Departure from Normal
3.91" : 202% of Normal
Year-To-Date: 16.73"
Jan 1 to Jun 26, 2026(62 of 177 days covered by obs)
NOAA Normal
18.14"
Departure from Normal
-1.41" : 92% of Normal
Water Year-To-Date: 24.05"
Oct 1, 2025 to Jun 26, 2026(154 of 269 days covered by obs)
NOAA Normal
25.99"
Departure from Normal
-1.94" : 93% 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