Dangerous Cold Persists through Monday; Wintry Weather from the Northern Plains to the Great Lakes

Bitter cold temperatures and dangerous wind chills will persist from Florida to the Northeast through Monday. Daily record low temperatures are forecast across the Southeast and Florida, with some all-time February low temperature records possible across Florida. An Alberta clipper will spread wintry precipitation across the Northern Plains today and into the upper Great Lakes into tonight. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Key Colony Beach FL

  • Tonight

    Tonight: Partly cloudy, with a low around 44. Breezy, with a northwest wind 15 to 20 mph.

    Low: 44 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 57. Wind chill values as low as 38 early. North wind around 15 mph.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50. North wind around 15 mph.

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 63. North wind 10 to 15 mph.

    High: 63 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 60. Northeast wind around 10 mph.

    Low: 60 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers.  Partly cloudy, with a low around 63. Chance of precipitation is 10%.

    Low: 63 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers.  Mostly sunny, with a high near 68. Chance of precipitation is 20%.

    High: 68 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers.  Partly cloudy, with a low around 53. Breezy.  Chance of precipitation is 10%.

    Low: 53 °F

    Slight Chance
    Showers and
    Breezy

Detailed Forecast

Tonight
Partly cloudy, with a low around 44. Breezy, with a northwest wind 15 to 20 mph.
Monday
Sunny, with a high near 57. Wind chill values as low as 38 early. North wind around 15 mph.
Monday Night
Mostly clear, with a low around 50. North wind around 15 mph.
Tuesday
Mostly sunny, with a high near 63. North wind 10 to 15 mph.
Tuesday Night
Mostly cloudy, with a low around 60. Northeast wind around 10 mph.
Wednesday
Mostly sunny, with a high near 68.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 63. Chance of precipitation is 10%.
Thursday
A slight chance of showers. Mostly sunny, with a high near 68. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 53. Breezy. Chance of precipitation is 10%.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 68.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Sunny, with a high near 69.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.71°N 81.02°W (Elev. 0 ft)
6:15 pm EST Feb 1, 2026
7pm EST Feb 1, 2026-6pm EST Feb 8, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database