Seminole County Climate
Seminole County, Florida
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
72.9°F
Annual Precip
51.8"
Annual Snowfall
0.0"
Extreme Heat Days
112
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
10a
Minimum winter temperature range for plant survival
8,406
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Seminole County
Climate Verdict
Seminole County has a hot, with an average annual temperature of 72.9°F, moderately wet with 51.8 inches of annual precipitation, significant summer heat with 111.95 days annually above 90°F, virtually no measurable snowfall. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are exceptionally mild, with January averaging 60.0°F. summers are hot, with July averaging 83.3°F. The climate is remarkably stable year-round, with only a 23°F difference between January and July.
Outdoor & Gardening Guidance
Summer outdoor activities should be planned for early morning or evening to avoid extreme heat.
Regional Context
Seminole County closely matches the Florida statewide average temperature of 71.0°F, it is somewhat drier than average for Florida, the county experiences 19.933279246006535 more extreme heat days than the state average.
Climate Profile
About Seminole County Weather
Warm Inland Subtropical Climate
Seminole County averages 72.9°F, placing it well above the national median for annual temperature. Its inland location creates a humid environment with no annual snowfall.
Warmer Than the State Norm
The 72.9°F average temperature in Seminole is nearly two degrees higher than the Florida state average of 71.1°F. It consistently ranks as a warm central Florida hub.
Comparing Central Heat
Seminole sees 112 extreme heat days, which is slightly less than Polk's 121 but significantly more than coastal St. Johns. It shares a similar July peak of 83.3°F with Pinellas.
Steamy Summers and Pleasant Winters
Summer averages reach 82.7°F, coupled with 112 days of temperatures topping 90°F. Winters provide a comfortable balance with a 61.8°F average and dry conditions.
Manage Summer Storms
Prepare for 51.8 inches of annual rain, much of which arrives during intense summer afternoon thunderstorms. Modern HVAC systems are a necessity to combat the 112 days of extreme heat.
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.