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

Critical Fire Weather in the Plains; Unseasonably Warm in the Southwest and Southern U.S.

Unseasonably warm temperatures continue through the weekend across the Southwest and southern U.S., with more than 100 record or near record maximum temperatures forecast through the rest of the week and over the weekend. Elevated to critical fire weather conditions will persist across the Plains and Southeast U.S. this weekend. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

A Few Clouds

81°F

27°C

Humidity 62%
Wind Speed E 13 mph
Barometer 30.09 in (1018.9 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 27 Mar 1:53 pm EDT
Extended Forecast for

Marathon Shores FL

  • This Afternoon

    This Afternoon: A slight chance of showers. Sunny, with a high near 82. East wind around 10 mph. Chance of precipitation is 10%.

    High: 82 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers. Mostly clear, with a steady temperature around 80. East wind around 10 mph. Chance of precipitation is 10%.

    Low: 80 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers. Sunny, with a high near 82. Northeast wind 5 to 10 mph. Chance of precipitation is 10%.

    High: 82 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers. Mostly clear, with a low around 73. Northeast wind 10 to 15 mph. Chance of precipitation is 20%.

    Low: 73 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers. Sunny, with a high near 81. East wind around 15 mph. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers. Mostly clear, with a low around 72. Breezy. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    Showers and
    Breezy

  • Monday

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

    High: 81 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers. Partly cloudy, with a low around 72. Breezy. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    Showers and
    Breezy

  • Tuesday

    Tuesday: A slight chance of showers. Mostly sunny, with a high near 78. Breezy. Chance of precipitation is 10%.

    High: 78 °F

    Slight Chance
    Showers and
    Breezy

Detailed Forecast

This Afternoon
A slight chance of showers. Sunny, with a high near 82. East wind around 10 mph. Chance of precipitation is 10%.
Tonight
A slight chance of showers. Mostly clear, with a steady temperature around 80. East wind around 10 mph. Chance of precipitation is 10%.
Saturday
A slight chance of showers. Sunny, with a high near 82. Northeast wind 5 to 10 mph. Chance of precipitation is 10%.
Saturday Night
A slight chance of showers. Mostly clear, with a low around 73. Northeast wind 10 to 15 mph. Chance of precipitation is 20%.
Sunday
A slight chance of showers. Sunny, with a high near 81. East wind around 15 mph. Chance of precipitation is 20%.
Sunday Night
A slight chance of showers. Mostly clear, with a low around 72. Breezy. Chance of precipitation is 20%.
Monday
A slight chance of showers. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 72. Breezy. Chance of precipitation is 20%.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 78. Breezy. Chance of precipitation is 10%.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 73. Breezy. Chance of precipitation is 10%.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 79. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 73. Chance of precipitation is 20%.
Thursday
A slight chance of showers. Partly sunny, with a high near 79. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon Shores FL
 24.74°N 81.04°W (Elev. 0 ft)
Last Update:
2:11 pm EDT Mar 27, 2026
Forecast Valid:
2pm EDT Mar 27, 2026-6pm EDT Apr 2, 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