Sumter County Climate
Sumter County, Florida
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
69.6°F
Annual Precip
—
Annual Snowfall
—
Extreme Heat Days
102
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
9b
Minimum winter temperature range for plant survival
7,261
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 69.6°F year-round, significant summer heat with 101.8 days annually above 90°F. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are exceptionally mild, with January averaging 56.1°F. summers are hot, with July averaging 80.2°F. The climate is remarkably stable year-round, with only a 24°F difference between January and July. January is typically the coldest month and August the warmest.
Outdoor & Gardening Guidance
Summer outdoor activities should be planned for early morning or evening to avoid extreme heat.
Regional Context
Sumter County closely matches the Florida statewide average temperature of 71.0°F.
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 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.