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

Cold Front Moving Through the Northeast U.S. Monday; Atmospheric River to Impact the Pacific Northwest Midweek

A cold front will cross the Great Lakes and Northeast U.S. through Monday with gusty winds and areas of rain showers. A strong atmospheric river is expected to move into the Pacific Northwest by midweek bringing a threat for moderate to heavy rainfall, gusty winds, and mountain snows for parts of Washington, Oregon, northern California, and the Sierra Nevada. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

80°F

27°C

Humidity 76%
Wind Speed N 8 mph
Barometer 30.06 in (1017.7 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 3 Nov 12:53 pm EST
Extended Forecast for

Marathon FLSimilar City Names

  • This Afternoon

    This Afternoon: A slight chance of showers. Mostly sunny, with a high near 83. North wind 5 to 10 mph. Chance of precipitation is 10%.

    High: 83 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers. Mostly cloudy, with a low around 74. Northeast wind 10 to 15 mph. Chance of precipitation is 10%.

    Low: 74 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 79. Northeast wind around 15 mph.

    High: 79 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 73. Northeast wind around 15 mph.

    Low: 73 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 80. East wind 10 to 15 mph.

    High: 80 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A slight chance of showers. Mostly cloudy, with a low around 75. Chance of precipitation is 10%.

    Low: 75 °F

    Slight Chance
    Showers

  • Thursday

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

    High: 83 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 75. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 82. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A slight chance of showers. Mostly sunny, with a high near 83. North wind 5 to 10 mph. Chance of precipitation is 10%.
Tonight
A slight chance of showers. Mostly cloudy, with a low around 74. Northeast wind 10 to 15 mph. Chance of precipitation is 10%.
Tuesday
Mostly cloudy, with a high near 79. Northeast wind around 15 mph.
Tuesday Night
Mostly cloudy, with a low around 73. Northeast wind around 15 mph.
Wednesday
Mostly cloudy, with a high near 80. East wind 10 to 15 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 75. Chance of precipitation is 10%.
Thursday
A slight chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 20%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 75. Chance of precipitation is 30%.
Friday
A chance of showers. Mostly cloudy, with a high near 82. Chance of precipitation is 30%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 76. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Saturday Night
A slight chance of showers. Mostly clear, with a low around 76. Chance of precipitation is 20%.
Sunday
A slight chance of showers. Sunny, with a high near 84. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon FLSimilar City Names
 24.72°N 81.07°W (Elev. 7 ft)
Last Update:
1:15 pm EST Nov 3, 2025
Forecast Valid:
1pm EST Nov 3, 2025-6pm EST Nov 9, 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