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Hourly
7 Days
14 Days
Monthly
°C
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°Celsius
°Fahrenheit
Monthly Historical Averages
Sullivan, IL
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February
Average Temperature
High
3°
Feels -1
Low
-6°
Feels -12
Average Precipitation
6 Days
Rain amount
22.5mm
Snow amount
15.1cm
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Daily Historical Averages
February 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
6°
21
4°
22
-1°
23
0°
24
6°
25
12°
26
4°
27
10°
28
16°
Forecast
Friday, February 20, 2026
Day
6°
Feels 1
Wind
40 km/h W
Gust
60 km/h
Humidity
42%
P.O.P
30%
Night
-4°
Feels -9
Wind
17 km/h NW
Gust
25 km/h
Humidity
74%
P.O.P
30%
Historical Averages
Feb 20
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.