Critical Fire Weather in the High Plains and Midwest; Heavy Snow in the Western Mountains and Northern Plains

Gusty winds and low relative humidity will bring critical fire weather to the central/southern High Plains and portions of the Midwest. Two Pacific storms will continue to bring heavy mountain snow and gusty winds to the western U.S. through Thursday. A swath of wintry weather, including heavy snow and a wintry mix, is expected from the Northern Plains to New England. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

77°F

25°C

Humidity 71%
Wind Speed SE 8 mph
Barometer 30.06 in (1017.9 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 18 Feb 1:53 pm EST
Extended Forecast for

Key Colony Beach FL

  • This Afternoon

    This Afternoon: Sunny, with a high near 81. Southeast wind 5 to 10 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 72. Southeast wind 5 to 10 mph.

    Low: 72 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Southeast wind 5 to 10 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72. Southeast wind around 10 mph.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 83. Southeast wind 5 to 10 mph.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 81. Southeast wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 72. Southeast wind 5 to 10 mph.
Thursday
Sunny, with a high near 82. Southeast wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 72. Southeast wind around 10 mph.
Friday
Sunny, with a high near 83. Southeast wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 73.
Saturday
Sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 71.
Sunday
Sunny, with a high near 81.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 60. Windy. Chance of precipitation is 10%.
Monday
Mostly sunny, with a high near 67. Breezy.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.74°N 81.02°W (Elev. 0 ft)
2:15 pm EST Feb 18, 2026
2pm EST Feb 18, 2026-6pm EST Feb 24, 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