Lexington County Climate
Lexington County, South Carolina
Avg Annual Temp
64.0°F
Annual Precip
48.0"
Annual Snowfall
1.1"
Extreme Heat Days
68.3
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Lexington County Weather
High Heat and Subtropical Humidity
Lexington County is significantly warmer than the national median, posting an annual average temperature of 64.0°F. Its 48.1 inches of rain puts it 10 inches above the national average, defining its humid subtropical character.
One of the Warmest Spots in the State
Lexington County exceeds the state average temperature of 62.8°F by over a full degree. This 64.0°F average makes it one of the hotter regions in South Carolina, particularly during the peak of summer.
Hotter than Neighboring Laurens County
Lexington is much warmer than Laurens County, which averages only 61.2°F. Lexington also faces five more days of extreme heat annually than Laurens, totaling 68 days above 90°F.
Intense Summer Heat and Dusting of Snow
Summer temperatures average 80.4°F, peaking in July at 81.9°F with 68 days of extreme heat. Winters are mild, averaging 47.4°F, though the county does see about 1.1 inches of snow annually.
Preparing for Significant Heat Exposure
Residents must plan for over two months of 90°F-plus days by investing in energy-efficient cooling and window tinting. The 1.1 inches of snow means while rare, winter weather can still impact local travel for a day or two.
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.