Monroe County Climate
Monroe County, Florida
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
77.9°F
Annual Precip
43.8"
Annual Snowfall
0.0"
Extreme Heat Days
67
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
11b
Minimum winter temperature range for plant survival
10,191
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Monroe County
Climate Verdict
Monroe County has a hot, with an average annual temperature of 77.9°F, moderately wet with 43.8 inches of annual precipitation, significant summer heat with 66.57272727272726 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 69.4°F. summers are hot, with July averaging 84.5°F. The climate is remarkably stable year-round, with only a 15°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 Monroe County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Monroe County is 6.8°F warmer than the Florida statewide average of 71.0°F, it is also noticeably drier, receiving 11.0 inches less precipitation than the state average, the county experiences 25.443993481266205 fewer extreme heat days than the state average.
Climate Profile
About Monroe County Weather
Monroe County leads the nation in warmth
Monroe's 77.9°F average annual temperature is significantly higher than the national median, reflecting its tropical climate. It is one of the few places in the United States that maintains such high temperatures throughout the year.
The warmest spot in the Sunshine State
Averaging 77.9°F, Monroe is the warmest county in Florida and sits far above the state average of 71.1°F. While much of the state experiences heavy rain, Monroe's 43.8 inches of annual precipitation is surprisingly below the state average.
Warmer and drier than mainland neighbors
Compared to nearby Palm Beach at 75.1°F, Monroe stays consistently warmer due to its island geography. It also receives nearly 18 inches less annual rainfall than its wetter coastal neighbors.
Endless summer with zero snow
Winters are the warmest in Florida, averaging 70.8°F from December through February. Residents experience 67 days of extreme heat above 90°F, and snowfall is non-existent.
Prepare for tropical heat and dry spells
High-efficiency cooling is a necessity for the 67 annual days of extreme heat. Residents should also plan for a drier environment than the Florida norm, as rainfall is 11 inches lower than the state average.
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.