National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Extremely Critical Fire Weather in the Central Plains; Active Pattern in the West

Gusty to high winds and low relative humidity will bring critical to extremely critical fire weather conditions to the central and southern Plains today into Wednesday. Use caution with any potential ignition sources. Two Pacific storms will impact the western U.S. into Wednesday with gusty winds, low elevation rain and heavy mountain snow. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

78°F

26°C

Humidity 69%
Wind Speed E 14 mph
Barometer 30.12 in (1019.8 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 17 Feb 11:53 am EST
Extended Forecast for

Marathon FL

  • This Afternoon

    This Afternoon: Sunny, with a high near 81. East wind around 10 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 70. East wind around 10 mph.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81. Southeast wind 5 to 10 mph.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 70. East wind around 5 mph.

    Low: 70 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Southeast wind 5 to 10 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Friday Night

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

    Low: 71 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 81. East wind around 10 mph.
Tonight
Mostly clear, with a low around 70. East wind around 10 mph.
Wednesday
Sunny, with a high near 81. Southeast wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 70. East wind around 5 mph.
Thursday
Sunny, with a high near 82. Southeast wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 70.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 71.
Saturday
Sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 70.
Sunday
A slight chance of showers. Sunny, with a high near 83. Chance of precipitation is 10%.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 58. Breezy. Chance of precipitation is 10%.
Monday
Sunny, with a high near 68. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marathon FL
 24.72°N 81.07°W (Elev. 7 ft)
Last Update:
12:15 pm EST Feb 17, 2026
Forecast Valid:
12pm EST Feb 17, 2026-6pm EST Feb 23, 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