Monthly Historical AveragesSumter, SC
Average Temperature
High
28°
Feels 29
Low
16°
Feels 16
Average Precipitation
10 Days
93.1mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastMonday, May 25, 2026
Day
30°Feels 32
Wind
14 km/h S
Gust
21 km/h
Humidity
63%
P.O.P
90%
Rain
~5 mm
Night
19°Feels 19
Wind
11 km/h S
Gust
16 km/h
Humidity
101%
P.O.P
60%
Rain
<1 mm
Historical AveragesMay 25
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity