Dangerous Cold Persists through Monday; Wintry Weather from the Northern Plains to the Great Lakes

Bitter cold temperatures and dangerous wind chills will persist from Florida to the Northeast through the day. Daily record low temperatures are forecast across the Southeast and Florida, with some all-time February low temperature records possible across Florida. An Alberta clipper will spread wintry precipitation across the Northern Plains today and into the upper Great Lakes into tonight. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

54°F

12°C

Humidity 43%
Wind Speed N 8 G 17 mph
Barometer 30.32 in (1026.7 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 2 Feb 5:53 pm EST
Extended Forecast for

Marathon FL

  • Tonight

    Tonight: Mostly clear, with a low around 47. North wind around 10 mph.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 67. North wind around 10 mph.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 59. Northeast wind around 10 mph.

    Low: 59 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 69. Northeast wind 5 to 10 mph.

    High: 69 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 60. Northeast wind around 5 mph becoming northwest after midnight.

    Low: 60 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers.  Mostly sunny, with a high near 69. Chance of precipitation is 30%.

    High: 69 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers.  Partly cloudy, with a low around 53. Chance of precipitation is 10%.

    Low: 53 °F

    Slight Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 47. North wind around 10 mph.
Tuesday
Sunny, with a high near 67. North wind around 10 mph.
Tuesday Night
Mostly cloudy, with a low around 59. Northeast wind around 10 mph.
Wednesday
Mostly sunny, with a high near 69. Northeast wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 60. Northeast wind around 5 mph becoming northwest after midnight.
Thursday
A chance of showers. Mostly sunny, with a high near 69. Chance of precipitation is 30%.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 53. Chance of precipitation is 10%.
Friday
Sunny, with a high near 63.
Friday Night
Mostly clear, with a low around 56.
Saturday
Sunny, with a high near 67.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 59.
Monday
Sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon FL
 24.72°N 81.07°W (Elev. 7 ft)
6:15 pm EST Feb 2, 2026
6pm EST Feb 2, 2026-6pm EST Feb 9, 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