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

Hazardous Weather Conditions

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

A Few Clouds

31°C

87°F

Humidity 65%
Wind Speed E 26 km/h
Barometer 1020.7 mb (30.14 in)
Dewpoint 23°C (74°F)
Visibility 16 km
Heat Index35°C (95°F)
Last update 23 Jun 11:53 am EDT
Extended Forecast for

Marathon FL

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms. Sunny, with a high near 31. East wind around 20 km/h. Chance of precipitation is 30%.

    High: 31 °C

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms. Mostly clear, with a low around 27. East wind around 25 km/h. Chance of precipitation is 40%.

    Low: 27 °C

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Sunny, with a high near 31. East wind around 20 km/h. Chance of precipitation is 40%.

    High: 31 °C

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 27. East wind 20 to 25 km/h. Chance of precipitation is 40%.

    Low: 27 °C

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Sunny, with a high near 31. East wind around 15 km/h. Chance of precipitation is 40%.

    High: 31 °C

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 27. Chance of precipitation is 40%.

    Low: 27 °C

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms. Mostly sunny, with a high near 31. Chance of precipitation is 40%.

    High: 31 °C

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 27. Chance of precipitation is 40%.

    Low: 27 °C

    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms. Partly sunny, with a high near 32. Chance of precipitation is 40%.

    High: 32 °C

    Chance
    Showers

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Sunny, with a high near 31. East wind around 20 km/h. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms. Mostly clear, with a low around 27. East wind around 25 km/h. Chance of precipitation is 40%.
Tuesday
A chance of showers and thunderstorms. Sunny, with a high near 31. East wind around 20 km/h. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 27. East wind 20 to 25 km/h. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms. Sunny, with a high near 31. East wind around 15 km/h. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 27. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 31. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 27. Chance of precipitation is 40%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 32. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 27. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 31. Chance of precipitation is 30%.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 27. Chance of precipitation is 20%.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 31. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon FL
 24.72°N 81.07°W (Elev. 7 m)
Last Update:
12:15 pm EDT Jun 23, 2025
Forecast Valid:
12pm EDT Jun 23, 2025-6pm EDT Jun 29, 2025
 
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