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

Above Average Temperatures in the West; Winter Weather Returns to the Upper Midwest and Great Lakes

Well above average temperatures will continue across the West this week, potentially breaking some daily high temperature records. A storm system dropping south out of Canada will bring a wintry mix to the Upper Midwest and Great Lakes Tuesday, pushing into the Central Appalachians and interior Northeast on Wednesday. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Partly Cloudy

N/A

Humidity NA
Wind Speed NE 5 mph
Barometer 30.09 in (1019.0 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 13 Jan 1:53 am EST
Extended Forecast for

Marathon FL

  • Overnight

    Overnight: A chance of showers. Mostly cloudy, with a low around 70. Northeast wind around 10 mph. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Mostly sunny, with a high near 79. Northeast wind around 5 mph. Chance of precipitation is 30%.

    High: 79 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Partly cloudy, with a low around 70. East wind around 5 mph becoming south after midnight. Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Partly sunny, with a high near 78. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 78 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Northwest wind around 10 mph. Chance of precipitation is 40%.

    Low: 69 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 75. Windy. Chance of precipitation is 40%.

    High: 75 °F

    Chance
    Showers and
    Windy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 53. Breezy.

    Low: 53 °F

    Partly Cloudy
    and Breezy

  • Friday

    Friday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of showers. Mostly cloudy, with a low around 70. Northeast wind around 10 mph. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly sunny, with a high near 79. Northeast wind around 5 mph. Chance of precipitation is 30%.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 70. East wind around 5 mph becoming south after midnight. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Northwest wind around 10 mph. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 75. Windy. Chance of precipitation is 40%.
Thursday Night
Partly cloudy, with a low around 53. Breezy.
Friday
Sunny, with a high near 62.
Friday Night
Partly cloudy, with a low around 58.
Saturday
Mostly sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
Mostly clear, with a low around 59.
M.L.King Day
Sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

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