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

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Key West International Airport (KEYW)

Lat: 24.56°NLon: 81.76°WElev: 3ft.

Fair

86°F

30°C

Humidity 72%
Wind Speed SE 6 mph
Barometer 30.04 in (1017.7 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 21 Aug 8:53 pm EDT
Extended Forecast for

Key West FL

  • Tonight

    Tonight: Partly cloudy, with a low around 82. Southeast wind 5 to 10 mph.

    Low: 82 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Southeast wind around 5 mph. Chance of precipitation is 20%.

    High: 92 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 82. Northeast wind 5 to 10 mph becoming southeast after midnight. Chance of precipitation is 10%.

    Low: 82 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 92. Southeast wind around 5 mph.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 83. East wind 5 to 10 mph.

    Low: 83 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers and thunderstorms. Sunny, with a high near 92. Chance of precipitation is 30%.

    High: 92 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 20%.

    Low: 82 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 30%.

    High: 92 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 83. Chance of precipitation is 50%.

    Low: 83 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 82. Southeast wind 5 to 10 mph.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Southeast wind around 5 mph. Chance of precipitation is 20%.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 82. Northeast wind 5 to 10 mph becoming southeast after midnight. Chance of precipitation is 10%.
Sunday
Sunny, with a high near 92. Southeast wind around 5 mph.
Sunday Night
Mostly clear, with a low around 83. East wind 5 to 10 mph.
Monday
A chance of showers and thunderstorms. Sunny, with a high near 92. Chance of precipitation is 30%.
Monday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 20%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 83. Chance of precipitation is 50%.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 20%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 83. Chance of precipitation is 50%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Key West FL
 24.55°N 81.77°W (Elev. 7 ft)
Last Update:
9:15 pm EDT Aug 21, 2026
Forecast Valid:
9pm EDT Aug 21, 2026-6pm EDT Aug 28, 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