Monthly Historical AveragesWestchester, IL
Average Temperature
High
21°
Feels 21
Low
11°
Feels 10
Average Precipitation
14 Days
102.2mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, May 24, 2026
Day
26°Feels 26
Wind
11 km/h NE
Gust
17 km/h
Humidity
37%
P.O.P
70%
Rain
~1 mm
Night
12°Feels 12
Wind
10 km/h S
Gust
15 km/h
Humidity
94%
P.O.P
10%
Historical AveragesMay 24
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity