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

Miami, Miami International Airport (KMIA)

Lat: 25.79°NLon: 80.32°WElev: 10ft.

A Few Clouds

90°F

32°C

Humidity 50%
Wind Speed S 10 G 23 mph
Barometer 29.99 in (1015.6 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 21 Jun 4:53 pm EDT
Extended Forecast for

Key Biscayne FL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny, with a high near 89. Heat index values as high as 100. South wind around 10 mph.

    High: 89 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 83. West wind 5 to 7 mph becoming east after midnight.

    Low: 83 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 89. Heat index values as high as 102. Southeast wind 7 to 9 mph.

    High: 89 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 83. Southeast wind around 8 mph.

    Low: 83 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 88. Southeast wind 6 to 8 mph.

    High: 88 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 82. Southeast wind 5 to 8 mph.

    Low: 82 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Light south wind becoming southeast 5 to 9 mph in the morning.

    High: 88 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 83. Southeast wind 7 to 9 mph. Chance of precipitation is 20%.

    Low: 83 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 10 percent chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 88. Southeast wind 8 to 10 mph.

    High: 88 °F

    Slight Chance
    T-storms then
    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny, with a high near 89. Heat index values as high as 100. South wind around 10 mph.
Tonight
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 83. West wind 5 to 7 mph becoming east after midnight.
Monday
Mostly sunny, with a high near 89. Heat index values as high as 102. Southeast wind 7 to 9 mph.
Monday Night
Mostly cloudy, with a low around 83. Southeast wind around 8 mph.
Tuesday
Mostly sunny, with a high near 88. Southeast wind 6 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 82. Southeast wind 5 to 8 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Light south wind becoming southeast 5 to 9 mph in the morning.
Wednesday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 83. Southeast wind 7 to 9 mph. Chance of precipitation is 20%.
Thursday
A 10 percent chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 88. Southeast wind 8 to 10 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms after 2am. Mostly clear, with a low around 84.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Friday Night
A 10 percent chance of showers and thunderstorms. Mostly clear, with a low around 84.
Saturday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 88.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 84.
Sunday
A chance of showers and thunderstorms. Sunny, with a high near 88.
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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:
4:02 pm EDT Jun 21, 2026
Forecast Valid:
4pm EDT Jun 21, 2026-6pm EDT Jun 28, 2026
 
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Additional Resources

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Chance of Precipitation