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

Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Mostly Cloudy

71°F

22°C

Humidity 84%
Wind Speed NE 8 G 18 mph
Barometer 30.20 in (1022.7 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 24 Dec 6:53 am EST
Extended Forecast for

Marathon Shores FL

  • Today

    Today: Sunny, with a high near 80. Northeast wind around 10 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 71. Northeast wind 5 to 10 mph.

    Low: 71 °F

    Mostly Clear

  • Christmas Day

    Christmas Day: Sunny, with a high near 80. Northeast wind 5 to 10 mph.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers. Mostly clear, with a low around 70. East wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 10%.

    Low: 70 °F

    Slight Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 79. North wind 5 to 10 mph becoming light in the afternoon.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 80. Northeast wind around 10 mph.
Tonight
Mostly clear, with a low around 71. Northeast wind 5 to 10 mph.
Christmas Day
Sunny, with a high near 80. Northeast wind 5 to 10 mph.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 70. East wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 10%.
Friday
Sunny, with a high near 79. North wind 5 to 10 mph becoming light in the afternoon.
Friday Night
Mostly clear, with a low around 69.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 70.
Sunday
Sunny, with a high near 79.
Sunday Night
Mostly clear, with a low around 70.
Monday
Mostly sunny, with a high near 78.
Monday Night
A slight chance of showers. Mostly clear, with a low around 64. Chance of precipitation is 10%.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 74. Chance of precipitation is 10%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marathon Shores FL
 24.72°N 81.05°W (Elev. 0 ft)
Last Update:
7:15 am EST Dec 24, 2025
Forecast Valid:
7am EST Dec 24, 2025-6pm EST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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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