Fire Weather Concerns in the South-Central U.S.; Heavy Precipitation in Northern California and the Great Lakes

Strong winds and dry conditions will promote elevated to critical fire weather conditions across southeast Colorado into the southern Plains and extending into the Ozarks. An atmospheric river will bring heavy rain and a flash flood threat to northern California and heavy mountain snow in the Cascades and Northern Rockies. A clipper system will bring heavy snow to the Great Lakes. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

58°F

14°C

Humidity 41%
Wind Speed Calm
Barometer 30.19 in (1022.4 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 24 Feb 5:53 pm EST
Extended Forecast for

Marathon FL

  • Tonight

    Tonight: Partly cloudy, with a low around 56. North wind around 5 mph becoming east after midnight.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 73. East wind around 5 mph.

    High: 73 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 67. East wind around 10 mph.

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 79. Southeast wind around 10 mph.

    High: 79 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers.  Partly cloudy, with a low around 71. Southeast wind around 10 mph.  Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers.  Mostly sunny, with a high near 81. Chance of precipitation is 10%.

    High: 81 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers.  Partly cloudy, with a low around 71. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers.  Mostly sunny, with a high near 81. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers.  Partly cloudy, with a low around 69. Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 56. North wind around 5 mph becoming east after midnight.
Wednesday
Mostly sunny, with a high near 73. East wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 67. East wind around 10 mph.
Thursday
Mostly sunny, with a high near 79. Southeast wind around 10 mph.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 71. Southeast wind around 10 mph. Chance of precipitation is 20%.
Friday
A slight chance of showers. Mostly sunny, with a high near 81. Chance of precipitation is 10%.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 71. Chance of precipitation is 20%.
Saturday
A slight chance of showers. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 69. Chance of precipitation is 20%.
Sunday
A slight chance of showers. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 69. Chance of precipitation is 10%.
Monday
A slight chance of showers. Sunny, with a high near 81. Chance of precipitation is 10%.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 70. Chance of precipitation is 20%.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 80. Chance of precipitation is 20%.
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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 24, 2026
6pm EST Feb 24, 2026-6pm EST Mar 3, 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