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

Severe Thunderstorms for Mid-Atlantic and Northeast; Typhoon Approaching Guam

A cold front will sweep eastward today accompanied by strong to severe thunderstorms for the mid-Atlantic and Northeast today. In the wake of this cold front, autumn like temperatures and gusty winds from the Plains, Mississippi Valley, Great Lakes to most of the eastern seaboard. Fire weather conditions for lower Mississippi Valley into portions of California. For Guam, a typhoon is approaching. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

85°F

29°C

Humidity 75%
Wind Speed E 6 mph
Barometer 29.94 in (1013.8 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 16 Oct 6:53 pm EDT
Extended Forecast for

Long Key FL

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly after 8pm. Mostly cloudy, with a low around 79. East wind around 5 mph. Chance of precipitation is 40%.

    Low: 79 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 85. East wind around 5 mph becoming calm. Chance of precipitation is 50%.

    High: 85 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 76. Northeast wind around 10 mph. Chance of precipitation is 90%.

    Low: 76 °F

    Showers

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. Northeast wind around 15 mph. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Northeast wind around 15 mph. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms. Mostly sunny, with a high near 83. Windy. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers and
    Windy

  • Monday Night

    Monday Night: A slight chance of showers. Mostly clear, with a low around 75. Windy. Chance of precipitation is 20%.

    Low: 75 °F

    Slight Chance
    Showers and
    Windy

  • Tuesday

    Tuesday: A slight chance of showers. Sunny, with a high near 83. Windy. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    Showers and
    Windy

  • Tuesday Night

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

    Low: 75 °F

    Slight Chance
    Showers and
    Windy

Detailed Forecast

Tonight
A chance of showers and thunderstorms, mainly after 8pm. Mostly cloudy, with a low around 79. East wind around 5 mph. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. East wind around 5 mph becoming calm. Chance of precipitation is 50%.
Saturday Night
Showers and possibly a thunderstorm. Low around 76. Northeast wind around 10 mph. Chance of precipitation is 90%.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. Northeast wind around 15 mph. Chance of precipitation is 70%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Northeast wind around 15 mph. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 83. Windy. Chance of precipitation is 30%.
Monday Night
A slight chance of showers. Mostly clear, with a low around 75. Windy. Chance of precipitation is 20%.
Tuesday
A slight chance of showers. Sunny, with a high near 83. Windy. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers. Mostly clear, with a low around 75. Windy. Chance of precipitation is 10%.
Wednesday
A slight chance of showers. Sunny, with a high near 82. Breezy. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers. Mostly clear, with a low around 75. Chance of precipitation is 20%.
Thursday
A slight chance of showers. Sunny, with a high near 82. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 75. Chance of precipitation is 20%.
Friday
A chance of showers. Sunny, with a high near 82. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Long Key FL
 24.83°N 80.81°W (Elev. 0 ft)
Last Update:
6:15 pm EDT Oct 16, 2026
Forecast Valid:
7pm EDT Oct 16, 2026-6pm EDT Oct 23, 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