Meteorologist Amy Freeze offers a concise Miami weather forecast for the morning of May 18, 2025. Expect 80°F by 8 AM with a gentle southern breeze, rising temperatures, and mostly sunny skies by midday.

Detailed Weather Forecast: Miami May 18, 2025 – Start your day knowing what to expect with Amy Freeze’s accurate and engaging weather report. Tomorrow’s morning starts with partly cloudy skies and a comfortable 80°F. The temperature will gently rise to 86 by midday, accompanied by a refreshing south-southeast breeze. Regional updates show a mixed weather pattern across the Southeast with thunderstorms moving eastward, potentially affecting travel plans. Stay prepared and informed!
The regional radar is lighting up with thunderstorms developing near Memphis, showing vigorous activity. Rain extends across Jackson and continues to spread eastward towards Montgomery, indicating potential wet conditions for travelers. With clouds and showers advancing, Atlanta is under the influence of rainy weather continuing through the afternoon. Coastal cities like Savannah and Jacksonville are currently enjoying clearer skies, free from significant precipitation.
Tomorrow morning in Miami begins with partly cloudy skies and temperatures starting at 80 degrees by 8 AM. A gentle breeze from the south at 5 miles per hour will keep things comfortable. As the morning progresses, temperatures rise to 84 degrees by 10 AM with winds shifting slightly to 7 miles per hour. By midday, expect mostly sunny conditions and a temperature of 86 degrees with a south-southeast wind at 9 miles per hour.
Tomorrow Atlanta will see a high of 88 degrees, while Montgomery tops out at 91. Jacksonville is looking particularly hot, reaching a blistering 96 degrees. New Orleans will also be warm at 88 degrees, and Tampa is slightly cooler at 93.
A wave of thunderstorms will move into the Southeast, from Houston to Jackson, overnight and continue eastward into Wednesday. Significant rainfall, with the possibility of downpours, is expected across Mississippi and Louisiana. Be alert for potential flooding in low-lying areas. By the time the system reaches Atlanta and Montgomery, expect diminishing storm strength, though scattered showers will persist. Temperatures remain mild post-storm, with a slight cooling expected as high-pressure builds behind the front, bringing clearer skies into Thursday.
The UV index in Miami is extremely high at 11, which means sun protection is crucial today. Expect a quick burn time of only 11 minutes, indicating the need for sunscreen, hats, and seeking shade during peak hours.
For the 7-day forecast in Miami: Sunday: Enjoy partly cloudy skies with a warm high of 87 degrees and a low of 77. Monday: Mostly clear weather on the way, with a high hitting 87 degrees and a low of 78. Tuesday: It’s a mostly clear day, temperatures rising to 88 degrees, and dipping to 79 at night. Wednesday: Mostly clear conditions continue, with the thermometer reaching a high of 89 degrees and a low around 78. Thursday: Partly cloudy skies expected, with a high of 89 degrees and a mild low of 79. Friday: Another partly cloudy day with a warm high of 88 degrees and a low of 79. Saturday: Clear skies dominate the day, maintaining a high of 87 degrees and a low of 79.