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

Tropical Storm Edouard to Impact the Northwest Gulf Coast; Heat Expands Eastward

Tropical Storm Edouard will bring tropical storm to hurricane conditions, heavy rainfall, flash and some river flooding, and storm surge to portions of Upper Texas and southwestern Louisiana coasts into Wednesday. Severe thunderstorms are possible in the Central Plains and Mid-Atlantic. Hot and humid conditions will expand from the Central Plains into the Ohio Valley and Mid-Atlantic. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

89°F

32°C

Humidity 72%
Wind Speed Vrbl 3 mph
Barometer 30.01 in (1016.1 mb)
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 1 Sep 10:53 am EDT
Extended Forecast for

2 Miles WSW Marathon FL

  • Today

    Today: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. East wind around 5 mph. Chance of precipitation is 20%.

    High: 89 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms. Partly cloudy, with a low around 83. Northeast wind around 5 mph. Chance of precipitation is 30%.

    Low: 83 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 90. East wind around 5 mph becoming calm. Chance of precipitation is 50%.

    High: 90 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 83. East wind around 5 mph. Chance of precipitation is 40%.

    Low: 83 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Southeast wind around 5 mph becoming calm. Chance of precipitation is 50%.

    High: 90 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely. Partly cloudy, with a low around 83. Chance of precipitation is 60%.

    Low: 83 °F

    T-storms
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.

    High: 89 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 83. Chance of precipitation is 50%.

    Low: 83 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 50%.

    High: 89 °F

    Chance
    T-storms

Detailed Forecast

Today
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. East wind around 5 mph. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms. Partly cloudy, with a low around 83. Northeast wind around 5 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. East wind around 5 mph becoming calm. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 83. East wind around 5 mph. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Southeast wind around 5 mph becoming calm. Chance of precipitation is 50%.
Thursday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 83. Chance of precipitation is 60%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 83. Chance of precipitation is 50%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 83. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Sunday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 83. Chance of precipitation is 60%.
Labor Day
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Marathon FL
 24.7°N 81.12°W (Elev. 0 ft)
Last Update:
11:15 am EDT Sep 1, 2026
Forecast Valid:
11am EDT Sep 1, 2026-6pm EDT Sep 7, 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