Monthly Historical AveragesChester, IL
Average Temperature
High
30°
Feels 32
Low
20°
Feels 20
Average Precipitation
11 Days
117.6mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, June 10, 2026
Day
34°Feels 43
Wind
25 km/h S
Gust
38 km/h
Humidity
48%
P.O.P
30%
Night
24°Feels 25
Wind
26 km/h S
Gust
40 km/h
Humidity
80%
P.O.P
20%
Historical AveragesJun 10
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity