Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East; Severe Storm Threat in the Gulf States Sunday

A significant winter storm is underway, bringing widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Extremely cold air will follow, prolonging dangerous travel and infrastructure impacts into next week. Severe thunderstorms may produce damaging gusts and tornadoes across the eastern Gulf Coast states Sunday morning and afternoon. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

80°F

27°C

Humidity 79%
Wind Speed SE 12 mph
Barometer 29.98 in (1015.3 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 25 Jan 2:53 pm EST
Extended Forecast for

Marathon Shores FL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 80. Southeast wind around 10 mph.

    High: 80 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers after 7pm.  Partly cloudy, with a low around 72. Southeast wind 5 to 10 mph becoming southwest after midnight.  Chance of precipitation is 10%.

    Low: 72 °F

    Slight Chance
    Showers

  • Monday

    Monday: A slight chance of showers.  Mostly sunny, with a high near 80. Southwest wind 5 to 15 mph becoming northwest in the afternoon.  Chance of precipitation is 10%.

    High: 80 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers before midnight.  Partly cloudy, with a low around 56. Windy, with a northwest wind 15 to 25 mph.  Chance of precipitation is 10%.

    Low: 56 °F

    Windy. Slight
    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 68. Breezy, with a north wind 10 to 20 mph.

    High: 68 °F

    Sunny and
    Breezy then
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers.  Mostly sunny, with a high near 68. Chance of precipitation is 10%.

    High: 68 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers.  Mostly cloudy, with a low around 54. Breezy.  Chance of precipitation is 10%.

    Low: 54 °F

    Slight Chance
    Showers and
    Breezy

  • Thursday

    Thursday: Sunny, with a high near 66. Breezy.

    High: 66 °F

    Mostly Sunny
    and Breezy
    then Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 80. Southeast wind around 10 mph.
Tonight
A slight chance of showers after 7pm. Partly cloudy, with a low around 72. Southeast wind 5 to 10 mph becoming southwest after midnight. Chance of precipitation is 10%.
Monday
A slight chance of showers. Mostly sunny, with a high near 80. Southwest wind 5 to 15 mph becoming northwest in the afternoon. Chance of precipitation is 10%.
Monday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 56. Windy, with a northwest wind 15 to 25 mph. Chance of precipitation is 10%.
Tuesday
Sunny, with a high near 68. Breezy, with a north wind 10 to 20 mph.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 68. Chance of precipitation is 10%.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 54. Breezy. Chance of precipitation is 10%.
Thursday
Sunny, with a high near 66. Breezy.
Thursday Night
Mostly clear, with a low around 55.
Friday
Mostly sunny, with a high near 68.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 58. Chance of precipitation is 10%.
Saturday
A slight chance of showers. Partly sunny, with a high near 69. Chance of precipitation is 10%.
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon Shores FL
 24.74°N 81.04°W (Elev. 0 ft)
2:15 pm EST Jan 25, 2026
3pm EST Jan 25, 2026-6pm EST Jan 31, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database