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Sumter climate
Typical historical weather for Sumter, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.
Want today's actual conditions instead? See the current forecast for Sumter.
Annual average
18.7°C
across all months
Warmest month
33°C
Jul average high
Coolest month
3.2°C
Jan average low
Annual rainfall
1188mm
total per year
Monthly averages
Average daily high/low temperature (band) and monthly rainfall (bars).
● Avg high● Avg low▮ Rainfall
Records on file
Hottest day
40.1°C
27 July 2025
Coldest day
-9.2°C
24 December 2022
Wettest day
151mm
8 October 2016
Windiest day
12.2m/s
8 October 2016
See the detail: Sumter on 8 October 2016.