Miami, Florida – Strong storms could slow Miami commutes by mid-afternoon Monday, July 21st, as a surge of summer heat and moisture builds inland.
According to the National Weather Service, a 40% chance of thunderstorms arrives Monday after 2 p.m., with scattered downpours and lightning possible across Miami-Dade County. Highs will reach 89°F, but the heat index could top 100°F. Southeast winds around 10 mph will add to the muggy feel. Travel along I-95 and US-1 may be impacted by localized heavy rain and reduced visibility.
Storm chances will decrease to 30% Monday night, but showers could still linger. Residents should secure outdoor items, monitor alerts, and avoid flooded roadways. Keep mobile devices charged in case of isolated power outages.
Rain chances persist through much of the week with daily highs staying in the upper 80s. Tuesday brings another 40% chance of afternoon thunderstorms, followed by gradually lower storm potential into the weekend. Heat remains a concern, with limited overnight relief.
Looking ahead, here’s the extended five-day forecast for Miami:
- Monday, July 21: Mostly sunny, 89°F. 40% chance of storms after 2 p.m.
- Tuesday: Partly sunny, 89°F. 40% chance of storms mainly after 2 p.m.
- Wednesday: 50% chance of thunderstorms. High near 88°F.
- Thursday: Showers likely early, 50% chance. High near 88°F.
- Friday: Mostly sunny, 88°F. 20% storm chance.
- Saturday: Partly sunny, 88°F. 20% chance of isolated storms.
More summer storms may return next week. Stay weather-aware and watch for updates.




