Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

For More Weather Information:

Key West, FL Local Forecast Office

3NM N American Shoal Light FL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 76 °F
N 10kt
1ft
Tonight
Low: 70 °F
Light Wind
1ft
Sunday
High: 77 °F
ENE 10kt
1ft
Sunday Night
Low: 72 °F
Light Wind
1ft
Monday
High: 78 °F
Light Wind
1ft
Monday Night
Low: 70 °F
NNW 10kt
< 1ft
Tuesday
High: 76 °F
NNW 15kt
1ft
Tuesday Night
Low: 61 °F
N 20kt
1-2ft
Wednesday
High: 69 °F
N 20kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:15 pm CST Dec 27, 2025
Forecast Valid: 1pm CST Dec 27, 2025-6pm CST Jan 2, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

N wind 5 to 10 kt. Sunny. Seas around 1 ft.

Tonight

Variable winds 5 kt or less. Mostly clear. Seas around 1 ft.

Sunday

ENE wind 5 to 10 kt. Mostly sunny. Seas around 1 ft.

Sunday Night

Variable winds 5 kt or less. Partly cloudy. Seas around 1 ft.

Monday

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

Monday Night

NNW wind 5 to 10 kt. Mostly clear. Seas 1 ft or less.

Tuesday

NNW wind 10 to 15 kt. Isolated showers. Seas around 1 ft.

Tuesday Night

N wind around 20 kt. Partly cloudy. Seas 1 to 2 ft.

Wednesday

N wind 10 to 20 kt. Sunny. 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.