Florida Weather Alert: Miami Thunderstorms and Heat Index Near 100 Push Travel Risks Into Monday, September 29

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Miami, Fla. – Drivers across South Florida could face slick roads and slow commutes this weekend as daily thunderstorms linger into Monday. With heat index values climbing toward 103 degrees, the combination of heavy rain and extreme humidity will challenge residents through the start of the workweek.

According to the National Weather Service in Miami, storms will intensify between 2 p.m. and 5 p.m. both Sunday and Monday. Localized flooding is possible on U.S. 1, I-95, and in low-lying neighborhoods. Winds may gust up to 30 mph, and lightning could disrupt outdoor events. Rainfall totals could reach half an inch in stronger storms.

Miami-Dade, Broward, and Palm Beach counties remain under close watch, as daily storm patterns will complicate travel and outdoor plans. Residents are urged to allow extra travel time, avoid flooded intersections, and secure outdoor items vulnerable to wind.

While scattered storms continue through Tuesday, drier and sunnier weather is on the horizon. By Wednesday, October 1, skies clear, and highs remain in the upper 80s with calmer winds. The midweek shift offers a seasonal break as South Florida steps into October with reduced storm chances.

Authorities encourage residents to prepare for temporary power outages, keep electronic devices charged, and stay tuned for updates should stronger storms form.

Warnings remain in place through Tuesday evening, with relief expected midweek.

Five-Day Forecast for Miami, Florida

  • Saturday: High near 89. Thunderstorms likely, especially late afternoon.
  • Sunday: Storms continue, high near 86. Gusts up to 30 mph.
  • Monday: Showers and storms after 11 a.m., high near 89.
  • Tuesday: Scattered storms, partly sunny, high near 90.
  • Wednesday (Oct. 1): Sunny and calmer, high near 88.

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