Sumter County weather, town by town
17 places in Sumter County, South Carolina, each with its own live forecast and radar, and where a station sits close enough, measured weather records.
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Measured at the NOAA stations serving these towns, daily records 1901 to 2026. Station extremes, not official state records.
Sumter County Weather Facts
Sumter County has 17 places on myweatherrock (14 census-designated places, 2 towns, 1 cities), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 108°F at Cades 4 W on August 2, 1999. The coldest night is 2°F at Sumter on January 21, 1985. The wettest day brought 10.67 inches of rain at Sumter on October 4, 2015. The biggest single-day snow measured 5.98 inches at Sumter on March 12, 1960. Those are station measurements from NOAA's daily records, 1901 to 2026, not official state records. By area the largest place is Sumter, about 33 square miles.
About Sumter County weather
The map on the Now tab shows every Sumter County town's current temperature from our own server, one dot per town. Tap any dot, or type a town above, for that town's full forecast.
What the weather is usually like
Across the 10 Sumter County towns with station normals, the warmest month is July, when the day usually reaches 91°F, and the coldest is January, when the night usually falls to 33°F. June is the wettest, with rain on about 12 days.
Means of the 1991 to 2020 station normals serving these towns, as published by NOAA; each town's page carries its own.
Where these numbers come from
- Current conditions and forecast: NOAA forecast grids decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Records: computed by myweatherrock from NOAA GHCN-Daily station records at the stations serving these towns. Measurements, not estimates.
- Warnings and alerts: the National Weather Service, passed through unchanged.
Sumter County weather records
Measured at the NOAA stations serving these towns, daily records 1901 to 2026. Station extremes, not official state records.
Common questions about Sumter County weather
- What is the hottest temperature recorded at a Sumter County station?
- 108°F at Cades 4 W on August 2, 1999, in the NOAA daily station records myweatherrock holds (1901 to 2026).
- What is the coldest temperature recorded at a Sumter County station?
- 2°F at Sumter on January 21, 1985.
- What is the most rain a Sumter County station has measured in one day?
- 10.67 inches at Sumter on October 4, 2015.
- What is the biggest one-day snowfall at a Sumter County station?
- 5.98 inches at Sumter on March 12, 1960.
- How many Sumter County towns have a weather page here?
- 17: 14 census-designated places, 2 towns, 1 cities. Each page carries current conditions, the hourly timeline, the ten day outlook, radar, and where a station sits close enough, measured records.
- Where does the Sumter County forecast come from?
- NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
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