National Weather Service Forecast for: Miami FL
Issued by: National Weather Service Miami - South Florida
Updated: 3:56 am EDT Jun 18, 2026

Miami
 
Today

Today: Mostly sunny, with a high near 90. Heat index values as high as 105. Southeast wind 10 to 13 mph.
Mostly Sunny

Tonight

Tonight: Partly cloudy, with a low around 83. Southeast wind 8 to 10 mph.
Partly Cloudy

Juneteenth

Juneteenth: A slight chance of showers and thunderstorms between 11am and 1pm.  Mostly sunny, with a high near 90. Heat index values as high as 103. Southeast wind 10 to 13 mph.  Chance of precipitation is 20%.
Slight Chance
T-storms

Friday
Night
Friday Night: A 20 percent chance of showers and thunderstorms before 2am.  Mostly cloudy during the early evening, then becoming clear, with a low around 82. South wind 6 to 9 mph.
Slight Chance
T-storms

Saturday

Saturday: A 50 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny, with a high near 89. Light south wind becoming southeast 5 to 9 mph in the afternoon.
Slight Chance
T-storms then
Chance
T-storms
Saturday
Night
Saturday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am.  Partly cloudy, with a low around 81. South wind around 6 mph becoming northwest in the evening.  Chance of precipitation is 30%.
Chance
T-storms then
Slight Chance
Showers
Sunday

Sunday: A 40 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 90. Light south wind becoming southeast 5 to 9 mph in the afternoon.
Mostly Sunny
then Chance
T-storms
Sunday
Night
Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm.  Partly cloudy, with a low around 83. South wind 3 to 6 mph.
Chance
T-storms

Monday

Monday: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 89. Light south wind becoming southeast 5 to 9 mph in the morning.
Mostly Sunny
then Slight
Chance
T-storms
Hi 90 °F Lo 83 °F Hi 90 °F Lo 82 °F Hi 89 °F Lo 81 °F Hi 90 °F Lo 83 °F Hi 89 °F

Heat Advisory
 

Today
 
Mostly sunny, with a high near 90. Heat index values as high as 105. Southeast wind 10 to 13 mph.
Tonight
 
Partly cloudy, with a low around 83. Southeast wind 8 to 10 mph.
Juneteenth
 
A slight chance of showers and thunderstorms between 11am and 1pm. Mostly sunny, with a high near 90. Heat index values as high as 103. Southeast wind 10 to 13 mph. Chance of precipitation is 20%.
Friday Night
 
A 20 percent chance of showers and thunderstorms before 2am. Mostly cloudy during the early evening, then becoming clear, with a low around 82. South wind 6 to 9 mph.
Saturday
 
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 89. Light south wind becoming southeast 5 to 9 mph in the afternoon.
Saturday Night
 
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 81. South wind around 6 mph becoming northwest in the evening. Chance of precipitation is 30%.
Sunday
 
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Light south wind becoming southeast 5 to 9 mph in the afternoon.
Sunday Night
 
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 83. South wind 3 to 6 mph.
Monday
 
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Light south wind becoming southeast 5 to 9 mph in the morning.
Monday Night
 
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 83.
Tuesday
 
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 90.
Tuesday Night
 
A 10 percent chance of showers and thunderstorms. Mostly clear, with a low around 83.
Wednesday
 
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 90.

 

Forecast from NOAA-NWS for Miami FL.