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

Critical Fire Weather in the Southern Plains; Severe Storms in the Ohio Valley

Strong winds and low humidity will create elevated to critical fire weather conditions across the Southern Plains on Thursday. Strong to severe thunderstorms are forecast in the Ohio Valley late Thursday into Friday morning, with the strongest storms capable of producing very large hail, damaging winds, and a few tornadoes. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

73°F

23°C

Humidity 64%
Wind Speed E 8 mph
Barometer 30.08 in (1018.5 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 25 Mar 8:53 pm EDT
Extended Forecast for

Key Colony Beach FL

  • Tonight

    Tonight: Mostly clear, with a low around 69. East wind around 10 mph.

    Low: 69 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 77. East wind around 10 mph.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers. Mostly clear, with a low around 72. East wind around 10 mph. Chance of precipitation is 10%.

    Low: 72 °F

    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers. Sunny, with a high near 78. East wind around 10 mph. Chance of precipitation is 10%.

    High: 78 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers. Mostly clear, with a low around 72. East wind around 10 mph. Chance of precipitation is 10%.

    Low: 72 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers. Sunny, with a high near 78. Chance of precipitation is 10%.

    High: 78 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers. Mostly clear, with a low around 72. Chance of precipitation is 10%.

    Low: 72 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers. Sunny, with a high near 78. Windy. Chance of precipitation is 20%.

    High: 78 °F

    Slight Chance
    Showers and
    Windy

  • Sunday Night

    Sunday Night: A slight chance of showers. Partly cloudy, with a low around 71. Windy. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    Showers and
    Windy

Detailed Forecast

Tonight
Mostly clear, with a low around 69. East wind around 10 mph.
Thursday
Sunny, with a high near 77. East wind around 10 mph.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 72. East wind around 10 mph. Chance of precipitation is 10%.
Friday
A slight chance of showers. Sunny, with a high near 78. East wind around 10 mph. Chance of precipitation is 10%.
Friday Night
A slight chance of showers. Mostly clear, with a low around 72. East wind around 10 mph. Chance of precipitation is 10%.
Saturday
A slight chance of showers. Sunny, with a high near 78. Chance of precipitation is 10%.
Saturday Night
A slight chance of showers. Mostly clear, with a low around 72. Chance of precipitation is 10%.
Sunday
A slight chance of showers. Sunny, with a high near 78. Windy. Chance of precipitation is 20%.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 71. Windy. Chance of precipitation is 20%.
Monday
A slight chance of showers. Mostly sunny, with a high near 77. Windy. Chance of precipitation is 10%.
Monday Night
Partly cloudy, with a low around 72. Windy.
Tuesday
Mostly sunny, with a high near 78. Windy.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 72. Windy. Chance of precipitation is 10%.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 78. Windy. Chance of precipitation is 10%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.74°N 81.02°W (Elev. 0 ft)
Last Update:
9:15 pm EDT Mar 25, 2026
Forecast Valid:
9pm EDT Mar 25, 2026-6pm EDT Apr 1, 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