Hazardous Spring Weather Shifts to the Eastern and Northwest U.S. Wednesday

Isolated to scattered severe thunderstorms are expected Wednesday from the ArkLaTex and Lower Mississippi Valley northeastward through the Ohio Valley and Mid-Atlantic. Thunderstorms may produce heavy to excessive rain that could pose a flooding threat from east Texas into Upstate New York. A moderate atmospheric river will bring heavy snow and high winds to the Northwest U.S. Read More >

For More Weather Information:

Key West, FL Local Forecast Office

3NM N American Shoal Light FL

Marine Point Forecast

[NOTICE]

Wednesday
High: 80 °F
ESE 15kt
3ft
Wednesday Night
Low: 75 °F
SE 15kt
3ft
Thursday
High: 80 °F
SE 10kt
2-3ft
Thursday Night
Low: 74 °F
Light Wind
1ft
Friday
High: 80 °F
Light Wind
1ft
Friday Night
Low: 74 °F
E 10kt
1-2ft
Saturday
High: 80 °F
SE 10kt
2ft
Saturday Night
Low: 75 °F
SE 15kt
2ft
Sunday
High: 81 °F
SE 15kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:15 am CDT Mar 11, 2026
Forecast Valid: 4am CDT Mar 11, 2026-6pm CDT Mar 17, 2026

View Nearby Observations

Detailed Forecast

Wednesday

ESE wind around 15 kt. Sunny. Seas around 3 ft.

Wednesday Night

SE wind around 15 kt. Partly cloudy. Seas around 3 ft.

Thursday

SE wind 5 to 10 kt becoming WSW in the afternoon. A slight chance of showers. Seas 2 to 3 ft.

Thursday Night

Variable winds 5 kt or less. A slight chance of showers. Seas around 1 ft.

Friday

Variable winds 5 kt or less. A slight chance of showers. Seas around 1 ft.

Friday Night

E wind 5 to 10 kt. A chance of showers and thunderstorms. Seas 1 to 2 ft.

Saturday

SE wind around 10 kt. A chance of showers and thunderstorms. Seas around 2 ft.

Saturday Night

SE wind 10 to 15 kt. A chance of showers and thunderstorms. Seas around 2 ft.

Sunday

SE wind 10 to 15 kt. A chance of showers and thunderstorms. Seas around 2 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.