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

29°C

84°F

Humidity 80%
Wind Speed Calm
Barometer 1019.5 mb (30.11 in)
Dewpoint 25°C (77°F)
Visibility 16 km
Heat Index34°C (94°F)
Last update 12 Jul 9:53 pm EDT
Extended Forecast for

Key Colony Beach FL

  • Tonight

    Tonight: A chance of showers and thunderstorms. Partly cloudy, with a low around 28. Southeast wind around 10 km/h. Chance of precipitation is 30%.

    Low: 28 °C

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms. Mostly sunny, with a high near 31. Calm wind. Chance of precipitation is 40%.

    High: 31 °C

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 27. East wind 5 to 15 km/h. Chance of precipitation is 30%.

    Low: 27 °C

    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms. Partly sunny, with a high near 31. South wind 5 to 10 km/h becoming west in the afternoon. Chance of precipitation is 40%.

    High: 31 °C

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 26. Calm wind becoming south 5 to 10 km/h after midnight. Chance of precipitation is 40%.

    Low: 26 °C

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Partly sunny, with a high near 30. Chance of precipitation is 50%.

    High: 30 °C

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 27. Chance of precipitation is 40%.

    Low: 27 °C

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Partly sunny, with a high near 31. Chance of precipitation is 40%.

    High: 31 °C

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.

    Low: 28 °C

    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms. Partly cloudy, with a low around 28. Southeast wind around 10 km/h. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 31. Calm wind. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 27. East wind 5 to 15 km/h. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 31. South wind 5 to 10 km/h becoming west in the afternoon. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 26. Calm wind becoming south 5 to 10 km/h after midnight. Chance of precipitation is 40%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 30. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 27. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 31. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 31. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 28. Chance of precipitation is 40%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 31. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 28. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 31. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.71°N 81.02°W (Elev. 0 m)
Last Update:
10:15 pm EDT Jul 12, 2025
Forecast Valid:
10pm EDT Jul 12, 2025-6pm EDT Jul 19, 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