Sumter County Climate
Sumter County, Georgia
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
64.3°F
Annual Precip
52.0"
Annual Snowfall
0.2"
Extreme Heat Days
66
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
8b
Minimum winter temperature range for plant survival
5,733
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Sumter County
Climate Verdict
Sumter County has a warm, averaging 64.3°F year-round, moderately wet with 52.0 inches of annual precipitation, significant summer heat with 66.1 days annually above 90°F, light snow averaging 0.2 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 47.0°F. summers are hot, with July averaging 80.5°F. The 34°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
The moderate temperatures support hiking, cycling, and camping comfortably in spring, summer, and fall.
Regional Context
Sumter County closely matches the Georgia statewide average temperature of 63.7°F.
Climate Profile
About Sumter County Weather
Consistently Warm Subtropical Environment
Sumter County averages 64.3°F annually, placing it well above the national average for temperature. This climate supports a long growing season but brings significant summer humidity.
A Typical South Georgia Climate Profile
At 64.3°F, Sumter is slightly warmer than the Georgia average of 63.7°F. Its annual precipitation of 52.0 inches is almost perfectly aligned with the state average of 51.4 inches.
Warmer and Wetter Than Spalding
Sumter is notably warmer than Spalding County to the north, which averages only 62.8°F. It also experiences 66 extreme heat days, compared to Spalding's 39.
Hot July and Rare Winter Dustings
July temperatures average 80.5°F, contributing to 66 days per year of 90-degree heat. While snow is rare, the county averages about 0.2 inches per year, usually in brief, non-accumulating events.
Monitor Humidity and Storm Potential
The combination of 52 inches of rain and 80-degree summer averages creates high humidity levels. Residents should ensure homes are well-insulated to keep cooling costs manageable during the long summer.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.