Record Heat Remains in Place This Week; Precipitation and Windy Conditions in the Northwest

Record warmth will persist across portions of California, the Southwest U.S., the central Great Basin and spread across the central U.S. for the middle of the week. High temperatures will approach 90 from Texas to the Ohio Valley. A moist frontal system will bring lowland rain, high elevation mountain snow, and breezy winds to the Pacific Northwest into the Northern Rockies through Wednesday. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

72°F

22°C

Humidity 73%
Wind Speed NW 6 mph
Barometer 30.09 in (1018.9 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 23 Mar 9:53 pm EDT
Extended Forecast for

Marathon FL

  • Tonight

    Tonight: Mostly clear, with a low around 68. North wind 5 to 10 mph.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. North wind around 5 mph.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 69. Northeast wind around 5 mph.

    Low: 69 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 78. East wind around 5 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 70. East wind 5 to 10 mph.

    Low: 70 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Thursday Night

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

    Low: 71 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Friday Night

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

    Low: 71 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 68. North wind 5 to 10 mph.
Tuesday
Sunny, with a high near 79. North wind around 5 mph.
Tuesday Night
Partly cloudy, with a low around 69. Northeast wind around 5 mph.
Wednesday
Sunny, with a high near 78. East wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 70. East wind 5 to 10 mph.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 71.
Friday
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 71.
Saturday
Sunny, with a high near 79.
Saturday Night
A slight chance of showers. Mostly clear, with a low around 71. Chance of precipitation is 20%.
Sunday
A chance of showers. Sunny, with a high near 79. Breezy. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 70. Windy. Chance of precipitation is 20%.
Monday
A slight chance of showers. Partly sunny, with a high near 78. Windy. 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)
10:15 pm EDT Mar 23, 2026
10pm EDT Mar 23, 2026-6pm EDT Mar 30, 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