Marine and Coastal Impacts from Imelda; Unsettled Weather in the West

Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine conditions and rip currents to much of the East Coast over the next several days. A series of Pacific frontal systems will bring waves of showers and thunderstorms to portions of northern California and the Pacific Northwest through midweek. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

88°F

31°C

Humidity 63%
Wind Speed W 12 G 21 mph
Barometer 29.82 in (1009.8 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 30 Sep 2:53 pm EDT
Extended Forecast for

Key Colony Beach FL

  • This Afternoon

    This Afternoon: A slight chance of showers and thunderstorms.  Sunny, with a high near 87. West wind around 15 mph.  Chance of precipitation is 20%.

    High: 87 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly after 8pm.  Mostly clear, with a low around 79. Northwest wind 10 to 15 mph.  Chance of precipitation is 30%.

    Low: 79 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms.  Sunny, with a high near 87. North wind 5 to 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 79. Northwest wind around 10 mph becoming north after midnight.  Chance of precipitation is 30%.

    Low: 79 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms.  Sunny, with a high near 87. North wind 5 to 10 mph.  Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 78. Chance of precipitation is 30%.

    Low: 78 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms.  Mostly sunny, with a high near 86. Chance of precipitation is 30%.

    High: 86 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 79. Chance of precipitation is 30%.

    Low: 79 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms.  Mostly sunny, with a high near 86. Chance of precipitation is 30%.

    High: 86 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms. Sunny, with a high near 87. West wind around 15 mph. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms, mainly after 8pm. Mostly clear, with a low around 79. Northwest wind 10 to 15 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Sunny, with a high near 87. North wind 5 to 10 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 79. Northwest wind around 10 mph becoming north after midnight. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Sunny, with a high near 87. North wind 5 to 10 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 78. Chance of precipitation is 30%.
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 30%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 79. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 79. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.71°N 81.02°W (Elev. 0 ft)
3:17 pm EDT Sep 30, 2025
3pm EDT Sep 30, 2025-6pm EDT Oct 6, 2025
 
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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