Dorchester County weather, town by town
6 places in Dorchester 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 1898 to 2026. Station extremes, not official state records.
Dorchester County Weather Facts
Dorchester County has 6 places on myweatherrock (5 towns, 1 census-designated places), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 107°F at Summerville 4W on September 21, 1925. The coldest night is -5°F at Summerville 4W on February 14, 1899. The wettest day brought 10.23 inches of rain at Summerville 4W on August 12, 1940. The biggest single-day snow measured 15 inches at Summerville 4W on February 10, 1973. Those are station measurements from NOAA's daily records, 1898 to 2026, not official state records. By area the largest place is Summerville, about 23 square miles.
About Dorchester County weather
The map on the Now tab shows every Dorchester 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 6 Dorchester County towns with station normals, the warmest month is July, when the day usually reaches 92°F, and the coldest is January, when the night usually falls to 35°F. August is the wettest, with rain on about 11 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.
Dorchester County weather records
Measured at the NOAA stations serving these towns, daily records 1898 to 2026. Station extremes, not official state records.
Common questions about Dorchester County weather
- What is the hottest temperature recorded at a Dorchester County station?
- 107°F at Summerville 4W on September 21, 1925, in the NOAA daily station records myweatherrock holds (1898 to 2026).
- What is the coldest temperature recorded at a Dorchester County station?
- -5°F at Summerville 4W on February 14, 1899.
- What is the most rain a Dorchester County station has measured in one day?
- 10.23 inches at Summerville 4W on August 12, 1940.
- What is the biggest one-day snowfall at a Dorchester County station?
- 15 inches at Summerville 4W on February 10, 1973.
- How many Dorchester County towns have a weather page here?
- 6: 5 towns, 1 census-designated places. 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 Dorchester 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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