Weather in Key Biscayne, FL
Updated 2026-08-11 12:00 local time · ZIP codes 33149
Partly cloudy
No government weather alerts were returned for this location at the latest update.
Next hours
91°6% rain
91°6% rain91°7% rain91°6% rain91°7% rain89°7% rain88°6% rain87°7% rain
86°7% rain86°7% rain86°6% rain86°7% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 7%).
It feels like 111°F with winds near 9 mph.
86°F, 7% rain chance and 11 mph wind.
Visibility is around 10 mi; gusts may reach 14 mph.
Current temperature is 91°F, wind 9 mph, rain chance up to 7%.
UV index is 10. Use shade, sunscreen, a hat and sunglasses.
Key Biscayne weather today
Partly cloudy and 91°F in Key Biscayne, FL. Today's high is 91°F with a 7% rain chance. Winds are around 9 mph with gusts near 10 mph. Relative humidity is 59%, pressure is 30.14 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Key Biscayne
Sunrise is at 06:52 AM and sunset is at 07:59 PM. Tomorrow's forecast calls for Sunny with a high near 87°F and a low near 85°F. The maximum rain chance is 36%.