Hillsborough County Climate
Hillsborough County, Florida
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
74.4°F
Annual Precip
52.9"
Annual Snowfall
0.0"
Extreme Heat Days
103
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
9b
Minimum winter temperature range for plant survival
8,947
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Hillsborough County
Climate Verdict
Hillsborough County has a hot, with an average annual temperature of 74.4°F, moderately wet with 52.9 inches of annual precipitation, significant summer heat with 102.75 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 62.2°F. summers are hot, with July averaging 83.7°F. The climate is remarkably stable year-round, with only a 21°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
Hillsborough County is 3.4°F warmer than the Florida statewide average of 71.0°F.
Climate Profile
About Hillsborough County Weather
Tropical warmth far above the national median
Hillsborough County maintains a 74.4°F average annual temperature, far outpacing the typical U.S. climate. The region stays warm year-round with virtually no cold-weather extremes.
One of Florida's hottest coastal hubs
At 74.4°F, the county is 3.3 degrees warmer than the Florida state average of 71.1°F. Its coastal proximity does little to lower the overall annual heat levels.
Hotter than neighboring Highlands and Lake
Hillsborough is notably warmer than Highlands (73.0°F) and Lake County (72.0°F). It receives 52.9 inches of rain annually, mirroring the precipitation patterns of its neighbors.
Blistering summers and non-existent winters
Summer temperatures average 83.4°F and contribute to 103 days of extreme heat annually. Winter is remarkably warm with a 64.1°F average and no snow.
Prepare for 103 days of extreme heat
Reliable cooling is a health necessity given the frequent 90°F+ days. The 52.9 inches of annual rain often comes in heavy bursts, requiring sturdy storm gear.
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.