Viewing Station: IL-CK-473 : Winnetka 1.0 NW
Aug 26, 2026 - Sep 27, 202628 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.31"
September 1-27, 2026(27 of 27 days covered by obs)
NOAA Normal
3.02"
Departure from Normal
0.29" : 109% of Normal
Year-To-Date: 3.31"
Jan 1 to Sep 27, 2026(33 of 270 days covered by obs)
NOAA Normal
29.12"
Departure from Normal
-25.81" : 11% of Normal
Water Year-To-Date: 3.31"
Oct 1, 2025 to Sep 27, 2026(33 of 362 days covered by obs)
NOAA Normal
37.02"
Departure from Normal
-33.71" : 9% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.95
2.04
-0.09
Feb
1.84
1.95
-0.11
Mar
2.23
2.19
0.04
Apr
3.70
3.73
-0.03
May
4.51
4.62
-0.11
Jun
4.38
4.23
0.15
Jul
3.77
3.63
0.14
Aug
3.72
4.10
-0.38
Sep
3.36
3.33
0.03
Oct
3.30
3.49
-0.19
Nov
2.48
2.60
-0.12
Dec
2.12
2.24
-0.12
37.36
38.15
-0.79