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Severe Thunderstorms in the Southeast U.S.; Critical Fire Weather in the Central and Southern Plains

Scattered severe thunderstorms remain possible this afternoon and evening across parts of southern Georgia into north and west-central Florida. Both damaging winds and a few tornadoes may occur. Gusty to high winds and low relative humidity will bring critical fire weather to the central and southern Plains today into Tuesday. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

77°F

25°C

Humidity 77%
Wind Speed S 7 mph
Barometer 29.96 in (1014.5 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 15 Feb 3:53 pm EST
Extended Forecast for

Marathon FL

  • This Afternoon

    This Afternoon: A slight chance of showers. Mostly sunny, with a high near 75. South wind around 5 mph. Chance of precipitation is 10%.

    High: 75 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers. Partly cloudy, with a low around 69. South wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    Showers

  • Washington's Birthday

    Washington's Birthday: A slight chance of showers. Mostly sunny, with a high near 74. West wind around 10 mph. Chance of precipitation is 20%.

    High: 74 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 65. Northwest wind around 10 mph becoming northeast after midnight.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75. East wind 5 to 10 mph.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

This Afternoon
A slight chance of showers. Mostly sunny, with a high near 75. South wind around 5 mph. Chance of precipitation is 10%.
Tonight
A slight chance of showers. Partly cloudy, with a low around 69. South wind 5 to 10 mph. Chance of precipitation is 20%.
Washington's Birthday
A slight chance of showers. Mostly sunny, with a high near 74. West wind around 10 mph. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 65. Northwest wind around 10 mph becoming northeast after midnight.
Tuesday
Sunny, with a high near 75. East wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 71.
Thursday
Sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 72.
Friday
Sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marathon FL
 24.72°N 81.1°W (Elev. 0 ft)
Last Update:
4:15 pm EST Feb 15, 2026
Forecast Valid:
4pm EST Feb 15, 2026-6pm EST Feb 21, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation