Monthly Historical AveragesMonticello, IL
Average Temperature
High
28°
Feels 30
Low
18°
Feels 17
Average Precipitation
13 Days
141mm
0cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, June 10, 2026
Day
32°Feels 35
Wind
26 km/h SW
Gust
39 km/h
Humidity
55%
P.O.P
40%
Rain
<1 mm
Night
22°Feels 23
Wind
26 km/h S
Gust
39 km/h
Humidity
94%
P.O.P
80%
Rain
~5 mm
Historical AveragesJun 10
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity