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

Lake Effect Snow in the Lower Great Lakes; Rain and High Elevation Snow in the West

Lake-effect snow will continue downwind of Lakes Erie and Ontario through Friday. In the Western U.S., rain and higher elevation snow will continue over the Great Basin through Friday. A front will move over the Pacific Northwest Thursday afternoon and produce light rain and higher elevation snow over the Cascades through Saturday. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

64°F

18°C

Humidity 96%
Wind Speed Calm
Barometer 30.12 in (1019.9 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 12 Feb 5:53 am EST
Extended Forecast for

Marathon Shores FL

  • Today

    Today: Sunny, with a high near 75. Calm wind becoming west around 5 mph in the afternoon.

    High: 75 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Northwest wind around 5 mph.

    Low: 63 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 74. Northwest wind around 5 mph.

    High: 74 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. Northwest wind around 5 mph becoming northeast after midnight.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 74. East wind 5 to 10 mph.

    High: 74 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers. Partly cloudy, with a low around 68. Chance of precipitation is 10%.

    Low: 68 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers. Mostly sunny, with a high near 76. Chance of precipitation is 20%.

    High: 76 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    Showers

  • Washington's Birthday

    Washington's Birthday: A chance of showers. Mostly sunny, with a high near 75. Chance of precipitation is 40%.

    High: 75 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 75. Calm wind becoming west around 5 mph in the afternoon.
Tonight
Partly cloudy, with a low around 63. Northwest wind around 5 mph.
Friday
Sunny, with a high near 74. Northwest wind around 5 mph.
Friday Night
Partly cloudy, with a low around 62. Northwest wind around 5 mph becoming northeast after midnight.
Saturday
Mostly sunny, with a high near 74. East wind 5 to 10 mph.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 68. Chance of precipitation is 10%.
Sunday
A slight chance of showers. Mostly sunny, with a high near 76. Chance of precipitation is 20%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Washington's Birthday
A chance of showers. Mostly sunny, with a high near 75. Chance of precipitation is 40%.
Monday Night
A slight chance of showers. Mostly clear, with a low around 64. Chance of precipitation is 10%.
Tuesday
Sunny, with a high near 73.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marathon Shores FL
 24.74°N 81.04°W (Elev. 0 ft)
Last Update:
6:15 am EST Feb 12, 2026
Forecast Valid:
6am EST Feb 12, 2026-6pm EST Feb 18, 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