Miami is starting Saturday, August 1, with clear skies and temperatures near 82 degrees, but the easy morning weather will not last. The city is headed for a high around 91 degrees, with humidity pushing the afternoon heat index as high as 108 and thunderstorms arriving after lunch.
Heat Advisory Runs Through Saturday Afternoon
A Heat Advisory is in effect from 11 a.m. to 6 p.m. Saturday for Miami-Dade and Broward counties, where heat-index values are expected to reach 105 to 110 degrees. The National Weather Service Miami advises residents to drink plenty of fluids, seek air conditioning, avoid strenuous activity during the hottest hours and check on neighbors who may be vulnerable to the heat. The advisory also warns that high heat and humidity may cause heat illness.
Storms Could Bring Heavy Downpours
Mostly sunny skies should hold through late morning, with showers and thunderstorms becoming more likely after 1 p.m. Saturday. South winds will increase to 3 to 13 mph, and slow-moving storms could produce gusty winds, brief heavy rain and localized flooding, especially around Miami's east coast metro communities.
Saturday night stays warm and unsettled, with a low near 82 degrees and another chance of showers and thunderstorms. Sunday, August 2, brings a high near 90, a heat index up to 106 and a 40% chance of storms, so beach plans, outdoor work and weekend events may need a flexible backup plan.
Storm Chances Rise Next Week
The wetter pattern strengthens Monday, August 3, when showers and thunderstorms are likely after 8 a.m. with a 60% rain chance and a high near 89 degrees. Storm chances remain high Tuesday and Wednesday, reaching 60% and 70%, respectively, before easing slightly to 60% Thursday and 50% Friday.
Temperatures will remain close to 90 degrees through the week, while heat-index values continue to create a daily heat concern. If you are outside Saturday, schedule strenuous tasks for early morning or evening, take frequent breaks in the shade or air conditioning, and move indoors immediately if you develop dizziness, nausea, confusion or unusual fatigue.
