National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Miami, Miami International Airport (KMIA)

Lat: 25.79°NLon: 80.32°WElev: 10ft.

Mostly Cloudy

78°F

26°C

Humidity 87%
Wind Speed Calm
Barometer 30.01 in (1016.3 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 18 Sep 6:53 am EDT
Extended Forecast for

Miami Beach FL

  • Today

    Today: Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 89. Heat index values as high as 100. East wind 5 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 89 °F

    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 10pm. Mostly cloudy, with a low around 78. Northeast wind 3 to 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 78 °F

    T-storms
    Likely then
    Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 89. Light and variable wind becoming east around 6 mph in the afternoon.

    High: 89 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 78. Light and variable wind. Chance of precipitation is 70%.

    Low: 78 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 88. Light and variable wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 90%.

    High: 88 °F

    Chance
    T-storms then
    T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 78. Southeast wind 3 to 5 mph. Chance of precipitation is 80%.

    Low: 78 °F

    Showers

  • Monday

    Monday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 89. South wind 5 to 8 mph. Chance of precipitation is 90%.

    High: 89 °F

    Showers
    Likely then
    T-storms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers likely and possibly a thunderstorm after 2am. Low around 79. South wind around 7 mph. Chance of precipitation is 80%.

    Low: 79 °F

    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 88. South wind 5 to 9 mph. Chance of precipitation is 80%.

    High: 88 °F

    Showers
    Likely then
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 89. Heat index values as high as 100. East wind 5 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms likely, mainly before 10pm. Mostly cloudy, with a low around 78. Northeast wind 3 to 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 89. Light and variable wind becoming east around 6 mph in the afternoon.
Saturday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 78. Light and variable wind. Chance of precipitation is 70%.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 88. Light and variable wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 90%.
Sunday Night
Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 78. Southeast wind 3 to 5 mph. Chance of precipitation is 80%.
Monday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 89. South wind 5 to 8 mph. Chance of precipitation is 90%.
Monday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers likely and possibly a thunderstorm after 2am. Low around 79. South wind around 7 mph. Chance of precipitation is 80%.
Tuesday
Showers and possibly a thunderstorm. High near 88. South wind 5 to 9 mph. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers likely and possibly a thunderstorm after 2am. Low around 80. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 87. Chance of precipitation is 80%.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 80. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms. High near 87. Chance of precipitation is 80%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Miami Beach FL
 25.8°N 80.13°W
Last Update:
4:02 am EDT Sep 18, 2026
Forecast Valid:
7am EDT Sep 18, 2026-6pm EDT Sep 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation