Weather in Key Biscayne, FL
Updated 2026-09-26 08:45 local time · ZIP codes 33149
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
80°16% rain
83°9% rain
84°3% rain
86°4% rain
87°8% rain87°9% rain87°10% rain86°17% rain85°20% rain
84°23% rain83°36% rain
82°36% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
There is a moderate rain chance, peaking near 36%.
It feels like 83°F with winds near 8 mph.
84°F, 3% rain chance and 6 mph wind.
Visibility is around 6 mi; gusts may reach 21 mph.
Current temperature is 80°F, wind 8 mph, rain chance up to 36%.
UV index is 0.
Local weather characteristics in Key Biscayne
Florida is warm and humid for much of the year. Sea breezes drive frequent summer thunderstorms, while tropical systems and hurricanes are an important warm-season risk.
Key Biscayne is part of the South weather region. The forecast point is near 25.69°N latitude and 80.16°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Key Biscayne weather today
Overcast and 80°F in Key Biscayne, FL. Today's high is 87°F with a 57% rain chance. Winds are around 8 mph with gusts near 8 mph. Relative humidity is 66%, pressure is 29.92 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Key Biscayne
Sunrise is at 07:10 AM and sunset is at 07:13 PM. Tomorrow's forecast calls for Patchy rain nearby with a high near 85°F and a low near 80°F. The maximum rain chance is 63%.