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

Heavy Rainfall for Portions of the West and Central U.S.; Monitoring Fire Weather Conditions for New England

Tropical moisture continues to flow across portions of the Great Basin, desert Southwest and California. Isolated instances of flash flooding remains possible. Meanwhile, a storm and associated frontal boundary will focus showers and thunderstorms for the center of the nation. For New England, dry and breezy conditions could enhance favorable fire weather conditions. Read More >

Current conditions at

Miami, Miami International Airport (KMIA)

Lat: 25.79°NLon: 80.32°WElev: 10ft.

Partly Cloudy

78°F

26°C

Humidity 87%
Wind Speed N 5 mph
Barometer 29.93 in (1013.5 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 20 Sep 6:53 am EDT
Extended Forecast for

Key Biscayne FL

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 87. Northeast wind 11 to 15 mph, with gusts as high as 20 mph.

    High: 87 °F

    Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 81. Breezy, with a northeast wind 11 to 16 mph. Chance of precipitation is 20%.

    Low: 81 °F

    Slight Chance
    T-storms and
    Breezy

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly after 7am. Mostly sunny, with a high near 87. Northeast wind 11 to 13 mph.

    High: 87 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 81. East wind 10 to 13 mph.

    Low: 81 °F

    Chance
    T-storms

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. East wind around 9 mph.

    High: 86 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 81. East wind around 9 mph.

    Low: 81 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. Southeast wind 6 to 8 mph.

    High: 88 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 81. East wind around 7 mph.

    Low: 81 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 8am. Mostly sunny, with a high near 87. East wind around 7 mph.

    High: 87 °F

    Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 87. Northeast wind 11 to 15 mph, with gusts as high as 20 mph.
Tonight
A slight chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 81. Breezy, with a northeast wind 11 to 16 mph. Chance of precipitation is 20%.
Sunday
A 40 percent chance of showers and thunderstorms, mainly after 7am. Mostly sunny, with a high near 87. Northeast wind 11 to 13 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 81. East wind 10 to 13 mph.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. East wind around 9 mph.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 81. East wind around 9 mph.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. Southeast wind 6 to 8 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 81. East wind around 7 mph.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly after 8am. Mostly sunny, with a high near 87. East wind around 7 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 81.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 81.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Key Biscayne FL
 25.69°N 80.17°W
Last Update:
2:16 am EDT Sep 20, 2025
Forecast Valid:
7am EDT Sep 20, 2025-6pm EDT Sep 26, 2025
 
Forecast Discussion
 
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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