Hazardous Coastal Conditions for the Mid-Atlantic; Storm System Approaching Southern Alaska

A Nor'easter will create hazardous marine and coastal conditions along the Mid-Atlantic coast through mid-week, with significant coastal flooding and beach erosion possible. Meanwhile, another strong storm system is forecast to bring high winds and heavy precipitation to portions of southern Alaska. Elsewhere, relatively benign weather is expected through the first half of the work week. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

85°F

29°C

Humidity 63%
Wind Speed NE 13 G 24 mph
Barometer 30.00 in (1015.8 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 19 Oct 1:53 pm EDT
Extended Forecast for

Marathon FL

  • This Afternoon

    This Afternoon: A chance of showers.  Sunny, with a high near 85. Windy, with a northeast wind around 25 mph, with gusts as high as 35 mph.  Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers and
    Windy

  • Tonight

    Tonight: A chance of showers before 8pm.  Partly cloudy, with a low around 77. Windy, with a northeast wind around 25 mph, with gusts as high as 35 mph.  Chance of precipitation is 30%.

    Low: 77 °F

    Windy. Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 84. Windy, with a northeast wind 20 to 25 mph, with gusts as high as 30 mph.

    High: 84 °F

    Sunny and
    Windy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.

    Low: 75 °F

    Mostly Clear
    and Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 83. Breezy, with a northeast wind 15 to 20 mph.

    High: 83 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers and thunderstorms.  Sunny, with a high near 83. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms.  Mostly clear, with a low around 75. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    Showers

  • Friday

    Friday: Showers likely and possibly a thunderstorm.  Mostly sunny, with a high near 82. Breezy.  Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely and
    Breezy

Detailed Forecast

This Afternoon
A chance of showers. Sunny, with a high near 85. Windy, with a northeast wind around 25 mph, with gusts as high as 35 mph. Chance of precipitation is 30%.
Tonight
A chance of showers before 8pm. Partly cloudy, with a low around 77. Windy, with a northeast wind around 25 mph, with gusts as high as 35 mph. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 84. Windy, with a northeast wind 20 to 25 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 75. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.
Wednesday
Sunny, with a high near 83. Breezy, with a northeast wind 15 to 20 mph.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 83. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 75. Chance of precipitation is 30%.
Friday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 82. Breezy. Chance of precipitation is 70%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 75. Breezy. Chance of precipitation is 50%.
Saturday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 83. Windy. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 75. Windy. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 83. Very windy. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon FL
 24.72°N 81.1°W (Elev. 0 ft)
1:15 pm EDT Oct 19, 2026
2pm EDT Oct 19, 2026-6pm EDT Oct 25, 2026
 
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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