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 >

Last Update: 429 PM EDT Sat Aug 22 2026

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Key West, FL Local Forecast Office

3NM SE Key Largo FL

Marine Zone Forecast


Tonight
East to southeast winds near 5 knots, increasing to 5 to 10 knots, becoming southeast late. Seas around 1 foot. nearshore waters smooth, becoming smooth to a light chop. A slight chance of showers and thunderstorms.
Sunday
East to southeast winds near 5 knots. Seas around 1 foot. Nearshore waters smooth. A slight chance of showers and thunderstorms.
Sunday Night
East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. A slight chance of showers and thunderstorms.
Monday
East winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. A slight chance of showers and thunderstorms.
Monday Night
East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. A chance of showers and thunderstorms.
Tuesday
East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. A slight chance of showers and thunderstorms.
Tuesday Night
East to southeast winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. A chance of showers and thunderstorms.
Wednesday
East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a light chop. A slight chance of showers and thunderstorms.
Wednesday Night Through Thursday Night
East to southeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. A chance of showers and thunderstorms.



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429 PM EDT Sat Aug 22 2026
 
 

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