Viewing Station: IL-LK-143 : Winthrop Harbor 1.7 W
Aug 5, 2026 - Sep 28, 202643 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 5.14"
September 1-28, 2026(28 of 28 days covered by obs)
NOAA Normal
3.14"
Departure from Normal
2.00" : 164% of Normal
Year-To-Date: 8.75"
Jan 1 to Sep 28, 2026(54 of 271 days covered by obs)
NOAA Normal
27.66"
Departure from Normal
-18.91" : 32% of Normal
Water Year-To-Date: 8.75"
Oct 1, 2025 to Sep 28, 2026(54 of 363 days covered by obs)
NOAA Normal
35.14"
Departure from Normal
-26.39" : 25% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.75
1.91
-0.16
Feb
1.73
1.84
-0.11
Mar
2.24
2.35
-0.11
Apr
3.75
3.87
-0.12
May
4.02
4.11
-0.09
Jun
4.15
4.10
0.05
Jul
3.30
3.41
-0.11
Aug
3.58
3.47
0.11
Sep
3.36
3.43
-0.07
Oct
3.23
3.17
0.06
Nov
2.37
2.37
0.00
Dec
1.88
2.08
-0.20
35.36
36.11
-0.75