Monroe County Climate
Monroe County, Florida
Avg Annual Temp
77.9°F
Annual Precip
43.8"
Annual Snowfall
0.0"
Extreme Heat Days
66.57272727272726
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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 source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.