Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

For More Weather Information:

Key West, FL Local Forecast Office

3NM E Key West FL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 90 °F
Light Wind
1ft
Tonight
Low: 84 °F
ESE 10kt
1ft
Friday
High: 91 °F
ESE 10kt
1ft
Friday Night
Low: 84 °F
E 10kt
1ft
Saturday
High: 91 °F
E 10kt
1ft
Saturday Night
Low: 84 °F
E 15kt
1-2ft
Sunday
High: 91 °F
ESE 10kt
1ft
Sunday Night
Low: 84 °F
E 10kt
1ft
Monday
High: 91 °F
ESE 10kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:16 pm CDT Aug 27, 2026
Forecast Valid: 3pm CDT Aug 27, 2026-6pm CDT Sep 2, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

Variable winds 5 kt or less. Sunny. Seas around 1 ft.

Tonight

ESE wind around 10 kt. Partly cloudy. Seas around 1 ft.

Friday

ESE wind around 10 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Friday Night

E wind around 10 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Saturday

E wind around 10 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Saturday Night

E wind 10 to 15 kt. A chance of showers and thunderstorms. Seas 1 to 2 ft.

Sunday

ESE wind around 10 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Sunday Night

E wind around 10 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Monday

ESE wind around 10 kt. A chance of showers and thunderstorms. Seas around 1 ft.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.