Sumter County Climate
Sumter County, Florida
Avg Annual Temp
69.6°F
Annual Precip
—
Annual Snowfall
—
Extreme Heat Days
101.8
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Precipitation data coming soon
Seasonal Overview
National Comparison
Data pending
Climate Profile
About Sumter County Weather
A warm humid subtropical interior
Sumter’s 69.6°F average temperature sits significantly higher than the national median of 53°F, placing it in a humid subtropical zone. Residents experience a warm climate typical of the Deep South interior.
Cooler than the Florida average
At 69.6°F, the county is slightly cooler than the Florida state average of 71.1°F. It ranks among the mid-tier counties for heat within the Sunshine State.
Consistent with central Florida patterns
Sumter remains cooler than coastal neighbors like Volusia (71.4°F) but shares the inland heat patterns of central Florida. While precipitation data is limited, its temperature profile mirrors the rural interior.
Significant extreme heat days
Summers reach an average of 79.8°F, fueled by 102 extreme heat days above 90°F annually. Winters are mild with a 58.1°F average, and snow is virtually non-existent.
Focus on cooling and light layers
High-efficiency HVAC is essential to combat over 100 days of extreme heat each year. Light, breathable fabrics are standard for the humid summers, while light jackets suffice for the 56.1°F January lows.
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.