Heat Advisory, Thunderstorms for South Florida

MIAMI, FL — The National Weather Service in Miami has issued a forecast of scattered to numerous showers and thunderstorms with a high rain chance across South Florida this morning through midday, Wednesday, August 6, 2025, shifting to the interior and Gulf coast this afternoon. Temperatures will reach the upper 80s to low 90s, with high humidity amplifying heat indices.

Rainfall chances today are significant, with Palmdale at 82%, Immokalee at 85%, Naples at 80%, Miami at 65%, Fort Lauderdale at 62%, West Palm Beach at 59%, and Homestead at 65%, according to the NWS forecast. These probabilities reflect increasing shower and thunderstorm activity favoring the western half of South Florida, with potential for localized heavy rainfall.

National Weather Service Miami South Florida Doppler Radar

Miami Weather Forecast

Today

Showers and thunderstorms likely, mainly before 3pm, shifting to the interior and Gulf coast this afternoon. Mostly sunny, with a high near 91°F. Southeast wind around 10-15 mph. Chance of precipitation ranges from 50-85%, with higher amounts in thunderstorm areas. New rainfall amounts of less than a tenth of an inch, except higher amounts (up to 2 inches) possible in thunderstorms. Heat index values as high as 106°F.

Tonight

A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly clear, with a low around 82°F. Southeast wind 8 to 10 mph.

Thursday

A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90°F. Heat index values as high as 101°F. Southeast wind around 14 mph, with gusts as high as 18 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 82°F. Southeast wind around 11 mph.

Friday

A 20 percent chance of showers and thunderstorms before 2pm. Mostly sunny, with a high near 89°F. Southeast wind around 14 mph, with gusts as high as 20 mph.

Friday Night

Mostly clear, with a low around 81°F. East wind around 10 mph.