Powerful Winter Storm from the Upper Midwest into the Northeast; Severe Thunderstorms in the Midwest and Ohio Valley

A rapidly-intensifying storm is expected to bring heavy snow, blizzard conditions, and icing from the Upper Midwest through the Great Lakes and Northeast. Scattered severe thunderstorms may produce severe/damaging wind gusts and a couple of tornadoes across parts of the Midwest and lower Ohio Valley through the evening. Arctic air will expand across the central and southern U.S.. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

79°F

26°C

Humidity 62%
Wind Speed N 5 mph
Barometer 30.05 in (1017.5 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 28 Dec 2:53 pm EST
Extended Forecast for

Marathon FLSimilar City Names

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 77. East wind around 5 mph.

    High: 77 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 69. East wind around 5 mph.

    Low: 69 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 77. Northeast wind around 5 mph becoming northwest in the afternoon.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. Northwest wind around 5 mph.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers.  Mostly sunny, with a high near 75. North wind 10 to 15 mph.  Chance of precipitation is 10%.

    High: 75 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers.  Partly cloudy, with a low around 58. Chance of precipitation is 10%.

    Low: 58 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • New Year's Day

    New Year's Day: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 77. East wind around 5 mph.
Tonight
Partly cloudy, with a low around 69. East wind around 5 mph.
Monday
Sunny, with a high near 77. Northeast wind around 5 mph becoming northwest in the afternoon.
Monday Night
Mostly clear, with a low around 67. Northwest wind around 5 mph.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 75. North wind 10 to 15 mph. Chance of precipitation is 10%.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 58. Chance of precipitation is 10%.
Wednesday
Sunny, with a high near 69.
Wednesday Night
Mostly clear, with a low around 58.
New Year's Day
Sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 60.
Friday
Sunny, with a high near 72.
Friday Night
Mostly clear, with a low around 64.
Saturday
Sunny, with a high near 74.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon FLSimilar City Names
 24.72°N 81.07°W (Elev. 7 ft)
2:15 pm EST Dec 28, 2025
3pm EST Dec 28, 2025-6pm EST Jan 3, 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