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

Heavy Rain Across the Southern US; Unsettled Pattern in the Pacific Northwest

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains Friday, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. High elevation snow and mixed precipitation and rain in the lower elevations will impact the Pacific Northwest this weekend before a stronger system moves in early next week. 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 93%
Wind Speed Calm
Barometer 30.08 in (1018.6 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 13 Feb 1:53 am EST
Extended Forecast for

Marathon FLSimilar City Names

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 59. North wind around 5 mph.

    Low: 59 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, sunny, with a high near 75. North wind around 5 mph.

    High: 75 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 60. Northwest wind around 5 mph becoming northeast after midnight.

    Low: 60 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 75. East wind 5 to 10 mph.

    High: 75 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers. Partly cloudy, with a low around 68. East wind around 10 mph. 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. Partly 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 30%.

    High: 75 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers. Mostly clear, with a low around 64. Chance of precipitation is 10%.

    Low: 64 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 59. North wind around 5 mph.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 75. North wind around 5 mph.
Friday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 60. Northwest wind around 5 mph becoming northeast after midnight.
Saturday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 75. East wind 5 to 10 mph.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 68. East wind around 10 mph. 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. Partly 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 30%.
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 74.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon FLSimilar City Names
 24.72°N 81.07°W (Elev. 7 ft)
Last Update:
2:15 am EST Feb 13, 2026
Forecast Valid:
2am EST Feb 13, 2026-6pm EST Feb 19, 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