Gusty winds, frequent lightning, and heavy downpours will be the main threats, with localized flooding due to excessive rainfall unable to be ruled out.
Storms are expected to develop from morning into the afternoon and early evening.
Excessive Rainfall Outlook
Excessive Rainfall Outlook – Marginal Risk (Level 1 of 4) for flash flooding across much of South Florida – Valid Friday, August 7, 2026
There is a Marginal Risk of excessive rainfall leading to flash flooding for much of South Florida, with the greatest threat this morning into the late afternoon/early evening.
Highest rain chances (Friday, August 7, 2026) focus inland and over Southwest Florida (60-70% in the Lake Okeechobee region and northern interior), with 50% across metro areas including Miami.
Today’s South Florida Rain Chances
Heat Risk Continues Today
Heat risk continues today — High temperatures will rise into the low 90s across most of South Florida. Peak Heat Index Values will generally range from 100°F to 110°F, resulting in a widespread moderate HeatRisk across metro areas, with values as high as 106°F in Miami.
Maximum Heat Index – Friday Afternoon, August 7, 2026
A 50 percent chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 91. Heat index values as high as 106. Northeast wind 5 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 50%.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 11pm. Partly cloudy, with a low around 81. East wind around 7 mph. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms before 2pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 92. Heat index values as high as 106. Southeast wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 81. East wind 6 to 8 mph.
Sunday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 91. Heat index values as high as 106. East wind 10 to 15 mph.
Sunday Night
Mostly clear, with a low around 81.
Monday
A chance of thunderstorms. Sunny, with a high near 92. Heat index values as high as 105. East wind 10 to 13 mph.
Monday Night
A chance of thunderstorms then mostly clear, with a low around 81.
Tuesday
Sunny then a slight chance of thunderstorms, with a high near 92.
