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 WSW Islamorada FL

Marine Point Forecast

[NOTICE]

Sunday
High: 76 °F
Light Wind
< 1ft
Sunday Night
Low: 69 °F
Light Wind
< 1ft
Monday
High: 76 °F
Light Wind
< 1ft
Monday Night
Low: 67 °F
NW 10kt
< 1ft
Tuesday
High: 73 °F
NNW 10kt
< 1ft
Tuesday Night
Low: 57 °F
N 15kt
< 1ft
Wednesday
High: 69 °F
N 15kt
< 1ft
Wednesday Night
Low: 56 °F
N 10kt
< 1ft
New Year's Day
High: 69 °F
N 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:15 am CST Dec 28, 2025
Forecast Valid: 3am CST Dec 28, 2025-6pm CST Jan 3, 2026

View Nearby Observations

Detailed Forecast

Sunday

Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.

Sunday Night

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

Monday

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

Monday Night

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

Tuesday

NNW wind 5 to 10 kt. A slight chance of showers. Seas 1 ft or less.

Tuesday Night

N wind 10 to 15 kt. A slight chance of showers. Seas 1 ft or less.

Wednesday

N wind 10 to 15 kt. Sunny. Seas 1 ft or less.

Wednesday Night

N wind around 10 kt. Mostly clear. Seas 1 ft or less.

New Year's Day

N wind around 10 kt. Sunny. Seas 1 ft or less.

*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.