Severe Thunderstorms for the Center of the Nation; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

A round of severe thunderstorms are forecast across areas of the Southern Plains, Mississippi Valley and Great Lakes this afternoon and tonight; The threat for flash flooding will also accompany these storms. The rainfall for the Great Lakes region could prolong the ongoing flooding. Where the rain is needed, the Southern High Plains, critical fire weather concerns through today. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

75°F

24°C

Humidity 88%
Wind Speed NE 9 mph
Barometer 30.04 in (1017.0 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 17 Apr 8:53 am EDT
Extended Forecast for

Marathon FL

  • Today

    Today: A slight chance of showers.  Mostly 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.  Partly cloudy, with a low around 74. East wind around 10 mph.  Chance of precipitation is 10%.

    Low: 74 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 82. East wind around 10 mph.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers.  Partly cloudy, with a low around 74. East wind around 10 mph.  Chance of precipitation is 10%.

    Low: 74 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 83. East wind around 5 mph.

    High: 83 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 74.

    Low: 74 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers.  Mostly sunny, with a high near 83. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    Showers

  • Monday Night

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

    Low: 72 °F

    Slight Chance
    Showers and
    Windy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79. Windy.

    High: 79 °F

    Mostly Sunny
    and Windy

Detailed Forecast

Today
A slight chance of showers. Mostly sunny, with a high near 82. East wind around 10 mph. Chance of precipitation is 10%.
Tonight
A slight chance of showers. Partly cloudy, with a low around 74. East wind around 10 mph. Chance of precipitation is 10%.
Saturday
Mostly sunny, with a high near 82. East wind around 10 mph.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 74. East wind around 10 mph. Chance of precipitation is 10%.
Sunday
Partly sunny, with a high near 83. East wind around 5 mph.
Sunday Night
Mostly cloudy, with a low around 74.
Monday
A slight chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 72. Windy. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 79. Windy.
Tuesday Night
Partly cloudy, with a low around 71. Windy.
Wednesday
Partly sunny, with a high near 78. Breezy.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 71. Chance of precipitation is 10%.
Thursday
A slight chance of showers. Mostly sunny, with a high near 79. Chance of precipitation is 10%.
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon FL
 24.72°N 81.07°W (Elev. 7 ft)
9:15 am EDT Apr 17, 2026
9am EDT Apr 17, 2026-6pm EDT Apr 23, 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