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

Tracking Storm System Across the Eastern U.S.

A storm system will continue to produce widespread showers and thunderstorms as it progresses eastward across the central U.S. into the Northeast through the weekend. There are risks of severe thunderstorms and excessive rainfall on Saturday from the Ozarks into the mid-Mississippi River Valley with potential for damaging winds, large hail, tornadoes, and flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

80°F

27°C

Humidity 67%
Wind Speed E 18 G 23 mph
Barometer 29.88 in (1011.7 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 17 Oct 5:53 pm EDT
Extended Forecast for

Marathon Shores FL

  • Tonight

    Tonight: A chance of showers, mainly before 8pm. Mostly clear, with a low around 76. Breezy, with an east wind around 20 mph. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    Showers and
    Breezy

  • Saturday

    Saturday: Sunny, with a high near 84. East wind around 15 mph.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers. Partly cloudy, with a low around 77. East wind around 15 mph. Chance of precipitation is 20%.

    Low: 77 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. East wind around 10 mph. Chance of precipitation is 40%.

    High: 85 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 77. East wind around 10 mph. Chance of precipitation is 40%.

    Low: 77 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 40%.

    High: 85 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 78. Chance of precipitation is 40%.

    Low: 78 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Mostly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Mostly clear, with a low around 77. Chance of precipitation is 10%.

    Low: 77 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
A chance of showers, mainly before 8pm. Mostly clear, with a low around 76. Breezy, with an east wind around 20 mph. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 84. East wind around 15 mph.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 77. East wind around 15 mph. Chance of precipitation is 20%.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. East wind around 10 mph. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 77. East wind around 10 mph. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 78. Chance of precipitation is 40%.
Tuesday
A chance of showers. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Tuesday Night
A slight chance of showers. Mostly clear, with a low around 77. Chance of precipitation is 10%.
Wednesday
A slight chance of showers. Sunny, with a high near 85. Chance of precipitation is 10%.
Wednesday Night
A slight chance of showers. Mostly clear, with a low around 77. Chance of precipitation is 10%.
Thursday
A slight chance of showers. Sunny, with a high near 85. Chance of precipitation is 10%.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 77. Chance of precipitation is 20%.
Friday
A slight chance of showers. Sunny, with a high near 85. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon Shores FL
 24.72°N 81.05°W (Elev. 0 ft)
Last Update:
6:15 pm EDT Oct 17, 2025
Forecast Valid:
6pm EDT Oct 17, 2025-6pm EDT Oct 24, 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