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

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

86°F

30°C

Humidity 70%
Wind Speed E 10 mph
Barometer 30.10 in (1019.1 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 8 Jul 7:53 pm EDT
Extended Forecast for

Key Colony Beach FL

  • Tonight

    Tonight: A slight chance of showers and thunderstorms. Mostly clear, with a low around 81. East wind around 10 mph. Chance of precipitation is 20%.

    Low: 81 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Northeast wind around 10 mph. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 82. East wind around 5 mph. Chance of precipitation is 40%.

    Low: 82 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms. Mostly sunny, with a high near 88. East wind around 5 mph. Chance of precipitation is 50%.

    High: 88 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 82. East wind around 10 mph. Chance of precipitation is 40%.

    Low: 82 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 40%.

    High: 87 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 30%.

    Low: 82 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 40%.

    High: 88 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 30%.

    Low: 82 °F

    Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms. Mostly clear, with a low around 81. East wind around 10 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Northeast wind around 10 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 82. East wind around 5 mph. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. East wind around 5 mph. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 82. East wind around 10 mph. Chance of precipitation is 40%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 81. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.74°N 81.02°W (Elev. 0 ft)
Last Update:
7:15 pm EDT Jul 8, 2025
Forecast Valid:
8pm EDT Jul 8, 2025-6pm EDT Jul 15, 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