Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East; Severe Storm Threat in the Gulf States Sunday

A significant winter storm is underway, bringing widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Extremely cold air will follow, prolonging dangerous travel and infrastructure impacts into next week. Severe thunderstorms may produce damaging gusts and tornadoes across the eastern Gulf Coast states Sunday morning and afternoon. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

76°F

24°C

Humidity 85%
Wind Speed SE 10 mph
Barometer 30.05 in (1017.6 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 25 Jan 6:53 am EST
Extended Forecast for

Key Colony Beach FL

  • Today

    Today: Mostly sunny, with a high near 80. Southeast wind around 10 mph.

    High: 80 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers.  Partly cloudy, with a low around 72. Southeast wind 5 to 10 mph becoming southwest after midnight.  Chance of precipitation is 10%.

    Low: 72 °F

    Slight Chance
    Showers

  • Monday

    Monday: A slight chance of showers.  Mostly sunny, with a high near 80. Southwest wind 5 to 15 mph becoming northwest in the afternoon.  Chance of precipitation is 10%.

    High: 80 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers before midnight.  Partly cloudy, with a low around 57. Windy, with a northwest wind 15 to 25 mph.  Chance of precipitation is 10%.

    Low: 57 °F

    Windy. Slight
    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 67. Breezy, with a north wind 10 to 20 mph.

    High: 67 °F

    Sunny and
    Breezy then
    Sunny

  • Tuesday Night

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

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers.  Mostly sunny, with a high near 68. Chance of precipitation is 10%.

    High: 68 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers.  Mostly cloudy, with a low around 55. Breezy.  Chance of precipitation is 10%.

    Low: 55 °F

    Slight Chance
    Showers and
    Breezy

  • Thursday

    Thursday: Sunny, with a high near 66. Breezy.

    High: 66 °F

    Mostly Sunny
    and Breezy
    then Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 80. Southeast wind around 10 mph.
Tonight
A slight chance of showers. Partly cloudy, with a low around 72. Southeast wind 5 to 10 mph becoming southwest after midnight. Chance of precipitation is 10%.
Monday
A slight chance of showers. Mostly sunny, with a high near 80. Southwest wind 5 to 15 mph becoming northwest in the afternoon. Chance of precipitation is 10%.
Monday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 57. Windy, with a northwest wind 15 to 25 mph. Chance of precipitation is 10%.
Tuesday
Sunny, with a high near 67. Breezy, with a north wind 10 to 20 mph.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 68. Chance of precipitation is 10%.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 55. Breezy. Chance of precipitation is 10%.
Thursday
Sunny, with a high near 66. Breezy.
Thursday Night
Mostly clear, with a low around 56.
Friday
Mostly sunny, with a high near 67.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 59. Chance of precipitation is 10%.
Saturday
A slight chance of showers. Partly sunny, with a high near 69. Chance of precipitation is 10%.
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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 Jan 25, 2026
6am EST Jan 25, 2026-6pm EST Jan 31, 2026
 
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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