Monthly Historical AveragesSullivan, IN
Average Temperature
High
4°
Feels 1
Low
-5°
Feels -10
Average Precipitation
6 Days
25.6mm
12cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastTuesday, February 17, 2026
Day
15°Feels 13
Wind
21 km/h S
Gust
32 km/h
Humidity
63%
P.O.P
30%
Night
12°Feels 10
Wind
30 km/h S
Gust
44 km/h
Humidity
88%
P.O.P
40%
Rain
<1 mm
Historical AveragesFeb 17
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity