Monthly Historical AveragesMonticello, IL
Average Temperature
High
2°
Feels -2
Low
-7°
Feels -13
Average Precipitation
6 Days
17.1mm
14.4cm
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Daily Historical Averages
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M
T
W
T
F
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ForecastSaturday, February 21, 2026
Day
2°Feels -2
Wind
18 km/h NW
Gust
28 km/h
Humidity
43%
P.O.P
30%
Night
-7°Feels -15
Wind
32 km/h NW
Gust
48 km/h
Humidity
65%
P.O.P
30%
Historical AveragesFeb 21
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity