Florida Weather Alert: Thunderstorms, 103° Heat Index Could Disrupt Friday Travel Across Miami—Summer Weather Alert Through Weekend

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Miami, Florida – A surge of tropical heat and storm activity is expected to grip South Florida starting Friday, July 25, as heat index values soar to 103°F and scattered thunderstorms build through the morning.

According to the National Weather Service, Miami will see a 30% chance of showers and thunderstorms before 8 a.m., followed by drier but still oppressive conditions. Highs will reach 88°F, but it will feel significantly hotter due to elevated humidity. Winds will remain breezy out of the southwest at up to 20 mph, with gusts possibly exceeding 21 mph, creating challenging driving conditions along I-95 and U.S. 1. Hydration and limited sun exposure are strongly advised.

Friday night brings mostly clear skies and a more comfortable low of 83°F, offering temporary relief before the weekend heats back up. Saturday and Sunday will bring sunny skies with highs near 88–89°F, minimal storm chances, and lighter easterly winds. It’s a good window for outdoor plans—but still take sun precautions.

Looking ahead to next week, Monday brings a 20% chance of afternoon storms, while Tuesday and Wednesday carry similar low-end thunderstorm risks with temperatures holding near 88–89°F. Mornings and evenings remain clear, making them ideal for early workouts or commutes.

Stay weather-aware heading into the weekend and early next week, especially during peak afternoon heat.


📅 Five-Day Miami Weather Forecast (July 25–30):

  • Friday, July 25: 88°F, breezy with AM storms possible. Heat index up to 103°.
  • Saturday, July 26: Sunny, high near 88°F. Light winds.
  • Sunday, July 27: Sunny, high near 89°F. Dry conditions.
  • Monday, July 28: Slight storm chance (20%), high near 89°F.
  • Tuesday, July 29: Continued storm risk (20%), high near 88°F.
  • Wednesday, July 30: Isolated storm chance, mostly sunny, high 88°F.