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.

Partly Cloudy

87°F

31°C

Humidity 75%
Wind Speed E 8 mph
Barometer 30.02 in (1016.5 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 11 Oct 5:53 pm EDT
Extended Forecast for

Key Colony Beach FL

  • Tonight

    Tonight: A slight chance of showers and thunderstorms. Mostly clear, with a low around 82. East wind around 5 mph. Chance of precipitation is 20%.

    Low: 82 °F

    Slight Chance
    T-storms

  • Columbus Day

    Columbus Day: A slight chance of showers and thunderstorms. Sunny, with a high near 89. Northeast wind around 5 mph. Chance of precipitation is 20%.

    High: 89 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 80. Northeast wind 5 to 10 mph. Chance of precipitation is 40%.

    Low: 80 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers. Sunny, with a high near 87. Northeast wind around 10 mph. Chance of precipitation is 20%.

    High: 87 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Mostly clear, with a low around 79. Northeast wind around 10 mph. Chance of precipitation is 20%.

    Low: 79 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Sunny, with a high near 87. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 80. Chance of precipitation is 40%.

    Low: 80 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms. Sunny, with a high near 87. Chance of precipitation is 40%.

    High: 87 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 81. Chance of precipitation is 40%.

    Low: 81 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms. Mostly clear, with a low around 82. East wind around 5 mph. Chance of precipitation is 20%.
Columbus Day
A slight chance of showers and thunderstorms. Sunny, with a high near 89. Northeast wind around 5 mph. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 80. Northeast wind 5 to 10 mph. Chance of precipitation is 40%.
Tuesday
A slight chance of showers. Sunny, with a high near 87. Northeast wind around 10 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers. Mostly clear, with a low around 79. Northeast wind around 10 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms. Sunny, with a high near 87. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 80. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Sunny, with a high near 87. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 81. Chance of precipitation is 40%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 79. Chance of precipitation is 50%.
Saturday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 86. Chance of precipitation is 60%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 78. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 85. Windy. Chance of precipitation is 70%.
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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:
5:15 pm EDT Oct 11, 2026
Forecast Valid:
6pm EDT Oct 11, 2026-6pm EDT Oct 18, 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