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.

Fair

88°F

31°C

Humidity 66%
Wind Speed E 10 mph
Barometer 30.07 in (1018.2 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 25 Jun 10:53 am EDT
Extended Forecast for

Key Colony Beach FL

  • Today

    Today: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 88 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms. Mostly clear, with a low around 83. East wind around 10 mph. Chance of precipitation is 30%.

    Low: 83 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms. Sunny, with a high near 88. East wind around 10 mph. Chance of precipitation is 30%.

    High: 88 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 84. East wind around 10 mph. Chance of precipitation is 30%.

    Low: 84 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms. Sunny, with a high near 88. East wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 88 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 83. Chance of precipitation is 30%.

    Low: 83 °F

    Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 83.

    Low: 83 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

Today
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms. Mostly clear, with a low around 83. East wind around 10 mph. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Sunny, with a high near 88. East wind around 10 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 84. East wind around 10 mph. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms. Sunny, with a high near 88. East wind 5 to 10 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 83. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 83.
Monday
Sunny, with a high near 88.
Monday Night
A slight chance of showers. Mostly clear, with a low around 83. Chance of precipitation is 10%.
Tuesday
Sunny, with a high near 88.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 83. Chance of precipitation is 20%.
Wednesday
A slight chance of showers and thunderstorms. Sunny, with a high near 88. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.71°N 81.02°W (Elev. 0 ft)
Last Update:
10:15 am EDT Jun 25, 2026
Forecast Valid:
11am EDT Jun 25, 2026-6pm EDT Jul 1, 2026
 
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