Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

69°F

21°C

Humidity 87%
Wind Speed N 5 mph
Barometer 30.06 in (1018.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 28 Dec 5:53 am EST
Extended Forecast for

Key Colony Beach FL

  • Today

    Today: Mostly sunny, with a high near 77. North wind around 5 mph becoming east in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 69. East wind around 5 mph.

    Low: 69 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 76. Northeast wind around 5 mph becoming northwest in the afternoon.

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 68. Northwest wind 5 to 10 mph.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers.  Mostly sunny, with a high near 73. North wind 10 to 15 mph.  Chance of precipitation is 10%.

    High: 73 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers.  Partly cloudy, with a low around 59. Chance of precipitation is 10%.

    Low: 59 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • New Year's Day

    New Year's Day: Sunny, with a high near 69.

    High: 69 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 77. North wind around 5 mph becoming east in the afternoon.
Tonight
Partly cloudy, with a low around 69. East wind around 5 mph.
Monday
Sunny, with a high near 76. Northeast wind around 5 mph becoming northwest in the afternoon.
Monday Night
Mostly clear, with a low around 68. Northwest wind 5 to 10 mph.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 73. North wind 10 to 15 mph. Chance of precipitation is 10%.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 59. Chance of precipitation is 10%.
Wednesday
Sunny, with a high near 68.
Wednesday Night
Mostly clear, with a low around 59.
New Year's Day
Sunny, with a high near 69.
Thursday Night
Mostly clear, with a low around 61.
Friday
Sunny, with a high near 71.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 74.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.74°N 81.02°W (Elev. 0 ft)
6:15 am EST Dec 28, 2025
6am EST Dec 28, 2025-6pm EST Jan 3, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database