Monthly Historical AveragesJohnston City, IL
Average Temperature
High
5°
Feels 2
Low
-4°
Feels -8
Average Precipitation
6 Days
36.5mm
7.9cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastFriday, January 9, 2026
Day
13°Feels 12
Wind
33 km/h W
Gust
50 km/h
Humidity
58%
P.O.P
40%
Rain
<1 mm
Night
7°Feels 4
Wind
10 km/h E
Gust
15 km/h
Humidity
89%
P.O.P
40%
Rain
~1 mm
Historical AveragesJan 9
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity