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

Hazardous Weather Conditions

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

A Few Clouds

86°F

30°C

Humidity 67%
Wind Speed S 9 mph
Barometer 30.02 in (1016.6 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 3 Jul 12:53 pm EDT
Extended Forecast for

Key Colony Beach FL

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms. Partly sunny, with a high near 86. South wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 86 °F

    Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 82. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 82 °F

    Slight Chance
    T-storms

  • Independence Day

    Independence Day: A chance of showers and thunderstorms. Partly sunny, with a high near 87. South wind around 5 mph. Chance of precipitation is 50%.

    High: 87 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 81. West wind around 5 mph. Chance of precipitation is 50%.

    Low: 81 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 86. Southwest wind around 10 mph. Chance of precipitation is 50%.

    High: 86 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 40%.

    Low: 82 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 20%.

    Low: 82 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A slight chance of showers and thunderstorms. Sunny, with a high near 87. Chance of precipitation is 20%.

    High: 87 °F

    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Partly sunny, with a high near 86. South wind 5 to 10 mph. Chance of precipitation is 30%.
Tonight
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 82. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 20%.
Independence Day
A chance of showers and thunderstorms. Partly sunny, with a high near 87. South wind around 5 mph. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 81. West wind around 5 mph. Chance of precipitation is 50%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Southwest wind around 10 mph. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 20%.
Monday
A slight chance of showers and thunderstorms. Sunny, with a high near 87. Chance of precipitation is 20%.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 20%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 20%.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.74°N 81.02°W (Elev. 0 ft)
Last Update:
12:35 pm EDT Jul 3, 2025
Forecast Valid:
1pm EDT Jul 3, 2025-6pm EDT Jul 9, 2025
 
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