Frigid Airmass to Bring Significantly Colder Temperatures; Heavy Lake-effect Snow; Fire Concerns Across the Central Gulf Coast

A frigid cold airmass will bring significantly colder weather across the eastern two thirds of the country early this week. Temperatures will tie or break many records across the Southeast through tonight. Moderate to heavy lake effect snow will continue downwind of the Great Lakes. Gusty winds and dry conditions will support an elevated fire weather threat across the Central Gulf Coast. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

A Few Clouds

75°F

24°C

Humidity 79%
Wind Speed NW 16 G 33 mph
Barometer 30.04 in (1017.2 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 10 Nov 12:53 pm EST
Extended Forecast for

Long Key FL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 80. Breezy, with a northwest wind 15 to 20 mph.

    High: 80 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 55. Breezy, with a northwest wind around 20 mph, with gusts as high as 30 mph.

    Low: 55 °F

    Partly Cloudy
    and Breezy

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 69. Breezy, with a north wind 15 to 20 mph.

    High: 69 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 64. Northeast wind around 15 mph.

    Low: 64 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 75. Northeast wind around 15 mph.

    High: 75 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 70.

    Low: 70 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 71.

    Low: 71 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 80. Breezy, with a northwest wind 15 to 20 mph.
Tonight
Partly cloudy, with a low around 55. Breezy, with a northwest wind around 20 mph, with gusts as high as 30 mph.
Veterans Day
Mostly sunny, with a high near 69. Breezy, with a north wind 15 to 20 mph.
Tuesday Night
Mostly cloudy, with a low around 64. Northeast wind around 15 mph.
Wednesday
Partly sunny, with a high near 75. Northeast wind around 15 mph.
Wednesday Night
Mostly cloudy, with a low around 70.
Thursday
Partly sunny, with a high near 77.
Thursday Night
Mostly cloudy, with a low around 71.
Friday
Mostly sunny, with a high near 78.
Friday Night
Partly cloudy, with a low around 73.
Saturday
Mostly sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 74.
Sunday
Sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Long Key FL
 24.83°N 80.81°W (Elev. 0 ft)
12:15 pm EST Nov 10, 2025
1pm EST Nov 10, 2025-6pm EST Nov 16, 2025
 
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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