Monthly Historical AveragesWilmette, IL
Average Temperature
High
19°
Feels 18
Low
9°
Feels 8
Average Precipitation
13 Days
105.9mm
0cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, May 20, 2026
Day
13°Feels 11
Wind
28 km/h N
Gust
42 km/h
Humidity
54%
P.O.P
30%
Night
9°Feels 6
Wind
28 km/h N
Gust
42 km/h
Humidity
71%
P.O.P
20%
Historical AveragesMay 20
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity