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

Severe Thunderstorms for Mid-Atlantic and Northeast; Typhoon Approaching Guam

A cold front will sweep eastward today accompanied by strong to severe thunderstorms for the mid-Atlantic and Northeast today. In the wake of this cold front, autumn like temperatures and gusty winds from the Plains, Mississippi Valley, Great Lakes to most of the eastern seaboard. Fire weather conditions for lower Mississippi Valley into portions of California. For Guam, a typhoon is approaching. 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 73%
Wind Speed E 10 mph
Barometer 29.98 in (1015.2 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 16 Oct 1:53 pm EDT
Extended Forecast for

Key Colony Beach FL

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms. Mostly sunny, with a high near 87. East wind around 5 mph. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers

  • Tonight

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

    Low: 81 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 86. East wind around 5 mph becoming calm. Chance of precipitation is 50%.

    High: 86 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 78. North wind around 10 mph. Chance of precipitation is 80%.

    Low: 78 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 84. Northeast wind around 15 mph. Chance of precipitation is 90%.

    High: 84 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 77. Chance of precipitation is 60%.

    Low: 77 °F

    Showers
    Likely

  • Monday

    Monday: Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 85. Windy. Chance of precipitation is 60%.

    High: 85 °F

    Showers
    Likely and
    Windy

  • Monday Night

    Monday Night: A chance of showers. Partly cloudy, with a low around 77. Windy. Chance of precipitation is 30%.

    Low: 77 °F

    Chance
    Showers and
    Windy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 84. Windy. Chance of precipitation is 40%.

    High: 84 °F

    Chance
    Showers and
    Windy

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. East wind around 5 mph. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 81. East wind around 5 mph. Chance of precipitation is 50%.
Saturday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 86. East wind around 5 mph becoming calm. Chance of precipitation is 50%.
Saturday Night
Showers and possibly a thunderstorm. Low around 78. North wind around 10 mph. Chance of precipitation is 80%.
Sunday
Showers and possibly a thunderstorm. High near 84. Northeast wind around 15 mph. Chance of precipitation is 90%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 77. Chance of precipitation is 60%.
Monday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 85. Windy. Chance of precipitation is 60%.
Monday Night
A chance of showers. Partly cloudy, with a low around 77. Windy. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 84. Windy. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 76. Breezy. Chance of precipitation is 30%.
Wednesday
A chance of showers. Sunny, with a high near 84. Breezy. Chance of precipitation is 30%.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 76. Chance of precipitation is 20%.
Thursday
A chance of showers. Sunny, with a high near 84. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.71°N 81.02°W (Elev. 0 ft)
Last Update:
2:15 pm EDT Oct 16, 2026
Forecast Valid:
2pm EDT Oct 16, 2026-6pm EDT Oct 22, 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