MIAMI | CGN News is publishing a city weather brief for Miami using official National Weather Service forecast data. This is a planning snapshot for readers, commuters, families and event organizers, not a severe-weather alert unless a separate official alert is listed.
Today and tonight
Miami today: Slight chance of showers and thunderstorms between 11 AM and 5 PM. Sunny, high near 89°F, with heat index values as high as 103. East wind 8 to 12 mph. Chance of precipitation 20%.
Miami tonight: Mostly clear, low around 81°F. East wind around 8 mph.
Planning notes
Miami readers should treat heat as the main planning issue even with only a slight storm chance. Heat index values around 103 can affect outdoor work, beach plans, construction, youth sports and long walks to transit. Schedule breaks, hydrate early and watch for isolated storms that can briefly disrupt causeway, beach and airport-area travel.
Forecasts can change quickly. Readers should check current National Weather Service forecasts, warnings and local emergency information before making travel, school, work, beach, road or event decisions.
What the forecast means for readers
The Miami forecast is mostly a heat-planning brief. A high near 89°F may not sound extreme by itself, but the listed heat index near 103 changes the risk profile. Heat index values combine temperature and humidity, and that is what the body experiences. Outdoor workers, beachgoers, children, older adults and people without reliable cooling should plan around the heat rather than the air temperature alone.
The slight thunderstorm chance is secondary but still relevant. A short-lived storm can affect beach conditions, airport operations, school sports or causeway travel. Lightning can develop quickly in South Florida even when most of the day is sunny.
What could change
If storms become more numerous than forecast, outdoor plans may need a faster shift indoors. If the sky stays mostly clear, the heat index may remain the bigger concern. Readers should watch for any heat advisories, marine warnings or thunderstorm alerts from the National Weather Service before finalizing plans.
Additional Reporting By: National Weather Service; NOAA