Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East

A significant, long-duration winter storm will bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Widespread travel disruptions, prolonged power outages, and vast tree damage is likely. Frigid temperatures, gusty winds, and dangerous wind chills will expand from the north-central US to the Southern Plains, MS Valley, and Midwest. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

N/A

Humidity NA
Wind Speed Calm
Barometer 30.06 in (1018.0 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 22 Jan 11:53 pm EST
Extended Forecast for

Marathon FL

  • Overnight

    Overnight: A slight chance of showers.  Partly cloudy, with a low around 67. Northeast wind around 5 mph.  Chance of precipitation is 10%.

    Low: 67 °F

    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers.  Mostly sunny, with a high near 78. East wind around 5 mph.  Chance of precipitation is 10%.

    High: 78 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers.  Mostly clear, with a low around 67. Northeast wind around 5 mph.  Chance of precipitation is 10%.

    Low: 67 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 79. East wind 5 to 10 mph.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 68. East wind 5 to 10 mph.

    Low: 68 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers.  Mostly clear, with a low around 72. Chance of precipitation is 10%.

    Low: 72 °F

    Slight Chance
    Showers

  • Monday

    Monday: A slight chance of showers.  Sunny, with a high near 79. Chance of precipitation is 10%.

    High: 79 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers.  Partly cloudy, with a low around 62. Chance of precipitation is 10%.

    Low: 62 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers. Partly cloudy, with a low around 67. Northeast wind around 5 mph. Chance of precipitation is 10%.
Friday
A slight chance of showers. Mostly sunny, with a high near 78. East wind around 5 mph. Chance of precipitation is 10%.
Friday Night
A slight chance of showers. Mostly clear, with a low around 67. Northeast wind around 5 mph. Chance of precipitation is 10%.
Saturday
Sunny, with a high near 79. East wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 68. East wind 5 to 10 mph.
Sunday
Sunny, with a high near 81.
Sunday Night
A slight chance of showers. Mostly clear, with a low around 72. Chance of precipitation is 10%.
Monday
A slight chance of showers. Sunny, with a high near 79. Chance of precipitation is 10%.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 62. Chance of precipitation is 10%.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 74. Chance of precipitation is 10%.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 66. Chance of precipitation is 10%.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 76. Chance of precipitation is 10%.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 64. Chance of precipitation is 20%.
Thursday
A slight chance of showers. Sunny, with a high near 71. Chance of precipitation is 10%.
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon FL
 24.72°N 81.07°W (Elev. 7 ft)
12:15 am EST Jan 23, 2026
12am EST Jan 23, 2026-6pm EST Jan 29, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database