Dillon County Climate
Dillon County, South Carolina
Avg Annual Temp
62.7°F
Annual Precip
48.6"
Annual Snowfall
0.8"
Extreme Heat Days
63.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Dillon County Weather
Warm Temperatures in the Pee Dee
Dillon County's annual average of 62.7°F is significantly higher than the national median temperature. It experiences a typical Deep South climate with plenty of sunshine and humidity. The region rarely sees prolonged freezing temperatures.
A Perfect Match for State Averages
Dillon's 62.7°F average and 48.6 inches of rain are nearly identical to the South Carolina state averages. It serves as a middle-ground climate for the state, neither the hottest nor the wettest. This consistency makes it a stable representative of the region's weather.
More Moderate Than Coastal Peers
Dillon is cooler than Charleston (66.1°F) and experiences 10 fewer extreme heat days than Darlington. It receives 48.6 inches of rain, which is much less than Clarendon's 55.7 inches. It occupies a more temperate niche in the eastern part of the state.
Hot Summers and Brisk, Clear Winters
Dillon sees 63 days of extreme heat each year, with July averages hitting 81.1°F. Winter is mild at 46.0°F but sees slightly more snow than its neighbors at 0.8 inches. Summer humidity remains the most significant seasonal challenge.
Balance Heat Prep and Moderate Rain
The 63 days of extreme heat require residents to have reliable cooling and plenty of shade. Because rainfall is average at 48.6 inches, standard drainage systems are usually sufficient. Keep a light shovel handy for the occasional 0.8 inches of winter snow.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.