Miami, Florida – Blistering afternoon heat and sudden thunderstorms are set to disrupt daily routines across Miami on Tuesday, July 29th, with summer’s intensity making a powerful return just as locals head home. Miami’s heat index could soar as high as 101°, with a risk of thunderstorms striking as early as 3 p.m.—potentially snarling traffic on US-1 and I-95 and creating hazards for anyone out during peak hours.
According to the National Weather Service, Miami will experience a 20 percent chance of showers and thunderstorms on Tuesday, combined with bright sun and muggy highs near 89°F. Dangerous heat index values and fast-changing weather mean residents should stay hydrated, limit time outdoors, and have a storm plan ready by midafternoon. Southeast winds will rise up to 15 mph, bringing brief relief before storms roll in. Utility crews and emergency responders urge the public to avoid downed power lines and check local alerts if severe storms develop.
Specific areas—Downtown Miami, Hialeah, and along Biscayne Boulevard—may see sudden downpours and lightning between 3 p.m. and 6 p.m., complicating commutes and outdoor plans. If thunderstorms strike, Miami-Dade Transit delays and scattered power interruptions are possible. Residents should charge devices, monitor weather apps, and avoid outdoor activities when thunder roars.
Heat and humidity remain the theme all week. By the weekend, look for continued sun, brief storm chances, and highs flirting with 90°F—classic South Florida summer weather. Stay alert for any new advisories and stay weather-ready as August arrives.
Five Day Forecast: Miami, FL (Tuesday, July 29th – Sunday, August 3rd)
- Tuesday: 20% chance of thunderstorms, sunny, high 89°F (heat index to 101°).
- Tuesday Night: Mostly clear, low 82°F.
- Wednesday: Slight chance of storms before 6 p.m., mostly sunny, high 90°F.
- Wednesday Night: Slight chance of storms, low 82°F.
- Thursday: 20% chance of thunderstorms, sunny, high 89°F.
- Thursday Night: Mostly clear, low 82°F.
- Friday: 20% chance of storms, sunny, high near 89°F.
- Friday Night: Mostly clear, low 82°F.
- Saturday – Sunday: 30% chance of afternoon storms, otherwise mostly sunny, highs near 89°F.
Weekend Outlook:
Expect classic Miami summer: sunshine, spotty afternoon storms, and sticky humidity into early August. Stay hydrated and check updates before heading outdoors.
