Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

Last Update: 1029 AM EDT Mon Aug 31 2026

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Key West, FL Local Forecast Office

Florida Bay FL

Marine Zone Forecast


Today
East to southeast winds 5 to 10 knots, decreasing to near 5 knots. Bay waters smooth to a light chop, becoming smooth. a chance of showers and thunderstorms.
Tonight
Northeast to east winds near 5 knots, becoming east and increasing to 5 to 10 knots. Bay waters smooth, becoming smooth to a light chop. A chance of showers and thunderstorms.
Tuesday
East to southeast winds near 5 knots. Bay waters smooth. A chance of showers and thunderstorms.
Tuesday Night
Northeast to east winds near 5 knots, becoming east to southeast and increasing to 5 to 10 knots. Bay waters smooth, becoming smooth to a light chop. A chance of showers and thunderstorms.
Wednesday
East to southeast winds near 5 knots. Bay waters smooth. Showers likely with a chance of thunderstorms.
Wednesday Night
East winds 5 to 10 knots, becoming east to southeast and increasing to near 10 knots. Bay waters smooth to a light chop, becoming a light chop. Showers likely with a chance of thunderstorms.
Thursday
East to southeast winds near 10 knots, increasing to 10 to 15 knots. Bay waters a light chop, becoming a light to moderate chop. Showers likely with a chance of thunderstorms.
Thursday Night
East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. Showers and thunderstorms likely.
Friday
Southeast winds 5 to 10 knots. Bay waters smooth to a light chop. A chance of showers and thunderstorms.
Friday Night
East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. A chance of showers and thunderstorms.



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1029 AM EDT Mon Aug 31 2026
 
 

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