Heavy Rain and Thunderstorms in the Plains; Snow in the Northern Rockies

A storm system moving eastward will bring widespread showers and thunderstorms over parts of the Northern Plains to the Southern Plains and Upper Great Lakes through Friday. Heavy snow will continue over parts of the Northern Rockies. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Mostly Cloudy

78°F

26°C

Humidity 74%
Wind Speed NE 6 mph
Barometer 29.86 in (1011.1 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 16 Oct 12:53 am EDT
Extended Forecast for

Long Key FL

  • Overnight

    Overnight: Mostly clear, with a low around 75. Northeast wind around 10 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers.  Sunny, with a high near 82. North wind 5 to 10 mph.  Chance of precipitation is 10%.

    High: 82 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers.  Partly cloudy, with a low around 76. Northeast wind around 10 mph.  Chance of precipitation is 20%.

    Low: 76 °F

    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers.  Mostly sunny, with a high near 82. Northeast wind 10 to 15 mph.  Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers.  Mostly clear, with a low around 76. East wind around 15 mph.  Chance of precipitation is 20%.

    Low: 76 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers.  Sunny, with a high near 82. Chance of precipitation is 10%.

    High: 82 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers.  Mostly clear, with a low around 78. Chance of precipitation is 20%.

    Low: 78 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A chance of showers.  Mostly sunny, with a high near 83. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers.  Partly cloudy, with a low around 78. Chance of precipitation is 30%.

    Low: 78 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 75. Northeast wind around 10 mph.
Thursday
A slight chance of showers. Sunny, with a high near 82. North wind 5 to 10 mph. Chance of precipitation is 10%.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 76. Northeast wind around 10 mph. Chance of precipitation is 20%.
Friday
A slight chance of showers. Mostly sunny, with a high near 82. Northeast wind 10 to 15 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of showers. Mostly clear, with a low around 76. East wind around 15 mph. Chance of precipitation is 20%.
Saturday
A slight chance of showers. Sunny, with a high near 82. Chance of precipitation is 10%.
Saturday Night
A slight chance of showers. Mostly clear, with a low around 78. Chance of precipitation is 20%.
Sunday
A chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Partly cloudy, with a low around 78. Chance of precipitation is 30%.
Monday
A chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 30%.
Monday Night
A slight chance of showers. Mostly clear, with a low around 77. Chance of precipitation is 20%.
Tuesday
A slight chance of showers. Sunny, with a high near 83. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers. Mostly clear, with a low around 77. Chance of precipitation is 20%.
Wednesday
A slight chance of showers. Sunny, with a high near 83. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Long Key FL
 24.83°N 80.81°W (Elev. 0 ft)
1:15 am EDT Oct 16, 2025
1am EDT Oct 16, 2025-6pm EDT Oct 22, 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