St. Lucie County Climate
St. Lucie County, Florida
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
73.3°F
Annual Precip
53.5"
Annual Snowfall
0.0"
Extreme Heat Days
69
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
10a
Minimum winter temperature range for plant survival
8,527
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: St. Lucie County
Climate Verdict
St. Lucie County has a hot, with an average annual temperature of 73.3°F, moderately wet with 53.5 inches of annual precipitation, significant summer heat with 68.5 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 62.5°F. summers are hot, with July averaging 81.6°F. The climate is remarkably stable year-round, with only a 19°F difference between January and July. January is typically the coldest month and August the warmest.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for St. Lucie County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
St. Lucie County closely matches the Florida statewide average temperature of 71.0°F, the county experiences 23.516720753993468 fewer extreme heat days than the state average.
Climate Profile
About St. Lucie County Weather
Tropical Warmth All Year
St. Lucie County averages 73.3°F, placing it among the warmest regions in the United States. Its proximity to the Atlantic keeps the air humid and the winters very mild.
Above the Florida Average
The county's average temperature of 73.3°F is over two degrees warmer than the state average of 71.1°F. It remains one of the more consistently warm counties in Florida.
Warm Winters Compared to Neighbors
St. Lucie has a winter average of 64.3°F, making it the warmest winter spot in this group. It also enjoys fewer extreme heat days than inland counties like Polk or Seminole.
Stable Temperatures Year-Round
The difference between summer (81.1°F) and winter (64.3°F) is less dramatic than in North Florida. Despite the high average temp, extreme heat over 90°F only occurs on 69 days.
Prepare for Constant Humidity
Outdoor lifestyles thrive here as extreme heat is limited to just 69 days annually. Use dehumidifiers to manage the 53.5 inches of annual rainfall and the persistent coastal moisture.
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.