Oconee County Climate
Oconee County, South Carolina
Avg Annual Temp
58.0°F
Annual Precip
65.5"
Annual Snowfall
2.8"
Extreme Heat Days
27.525
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Oconee County Weather
A Refreshing Exception to National Norms
Oconee County averages 58.0°F annually, placing it closer to the national median than most of its South Carolina neighbors. The county receives a staggering 65.5 inches of precipitation, far exceeding the United States average. This creates a lush, temperate environment unique to the Blue Ridge foothills.
The Coolest Corner of South Carolina
Oconee is one of the coolest counties in the state, with its 58.0°F average sitting nearly five degrees below the state average of 62.8°F. It also serves as the state's wettest region, recording 65.5 inches of rain compared to the state average of 48.9 inches. This mountain-influenced climate sets it apart from the sweltering Lowcountry.
Distinctly Cooler Than Neighboring Pickens
Oconee stays notably cooler than adjacent Pickens County, which averages 60.3°F annually. The county also sees more precipitation than Spartanburg, which records 50.5 inches compared to Oconee's 65.5 inches. These differences highlight the significant impact of Oconee's higher elevation.
Mild Summers and Snowy Peaks
Summers are relatively comfortable with only 28 days hitting 90°F, while July averages a mild 75.4°F. Winter is the coldest in the region, averaging 41.8°F with an annual snowfall of 2.8 inches. This represents the highest snow accumulation among the counties in this group.
Prepare for Rain and Frozen Pipes
Residents must maintain high-capacity gutters and drainage systems to handle the heavy 65.5-inch annual rainfall. Winter preparations should include snow shovels and insulation for pipes to withstand the 2.8 inches of snow and chilly 40.1°F January lows. Lightweight summer clothing suffices for the modest 28 days of extreme heat.
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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.