Miami, FL – Dangerous heat will grip Miami on Wednesday with heat index values peaking near 103 degrees before a round of late-day thunderstorms moves in. The combination of intense sun and high humidity could make outdoor activities hazardous during the afternoon.
According to the National Weather Service, the storm threat will develop after 4 p.m., with scattered thunderstorms potentially impacting Miami-Dade and surrounding counties through Wednesday evening. These storms could bring brief heavy rain, gusty winds, and dangerous lightning, particularly for coastal areas and commuters on I-95, U.S. 1, and the Palmetto Expressway.
The heat will be the bigger risk earlier in the day, prompting advice for residents to stay hydrated, limit strenuous activity outdoors, and check on vulnerable neighbors. Outdoor workers and athletes should plan breaks in shaded or air-conditioned spaces.
While the storm chances will decrease overnight, the pattern of hot, humid afternoons with isolated thunderstorms will continue into the weekend. Additional advisories may be issued if conditions worsen.
Five Day Miami, FL Forecast:
- Tuesday Night: 30% chance of showers and thunderstorms before midnight. Low 82°F.
- Wednesday: Mostly sunny, heat index up to 103, storms after 4 p.m. High 89°F, low 82°F.
- Thursday: Slight chance of afternoon storms. High 89°F, low 83°F.
- Friday: 20% chance of showers and thunderstorms in the afternoon. High 89°F, low 83°F.
- Saturday: 30% chance of morning storms. Mostly sunny. High 89°F, low 83°F.
