Prolonged Extreme Cold; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the Gulf Coast, upper Ohio Valley, Mid-Atlantic, and Southeast U.S. into this weekend. A rapidly deepening storm centered just off the North Carolina coast Friday night through Saturday night will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia. Read More >

For More Weather Information:

Key West, FL Local Forecast Office

Boot Key Harbor FL

Marine Point Forecast

[NOTICE]

Overnight
Low: 61 °F
ENE 10kt
< 1ft
Friday
High: 67 °F
N 10kt
< 1ft
Friday Night
Low: 60 °F
NW 10kt
< 1ft
Saturday
High: 68 °F
⇑WNW 20kt
< 1ft
Saturday Night
Low: 43 °F
NW 25kt
< 1ft
Sunday
High: 54 °F
NNW 20kt
< 1ft
Sunday Night
Low: 43 °F
NNW 15kt
< 1ft
Monday
High: 58 °F
N 10kt
< 1ft
Monday Night
Low: 52 °F
NNE 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:34 pm CST Jan 29, 2026
Forecast Valid: 12am CST Jan 30, 2026-6pm CST Feb 5, 2026

View Nearby Observations

Detailed Forecast

Overnight

ENE wind around 10 kt. A chance of showers. Seas 1 ft or less.

Friday

NE wind around 10 kt becoming N in the afternoon. A chance of showers. Seas 1 ft or less.

Friday Night

NW wind around 10 kt. A slight chance of showers. Seas 1 ft or less.

Saturday

WNW wind 10 to 15 kt increasing to 15 to 20 kt in the afternoon. Showers likely. Seas 1 ft or less.

Saturday Night

NW wind around 25 kt, with gusts as high as 35 kt. A slight chance of showers. Seas 1 ft or less.

Sunday

NNW wind around 20 kt. A slight chance of showers. Seas 1 ft or less.

Sunday Night

NNW wind around 15 kt. Partly cloudy. Seas 1 ft or less.

Monday

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

Monday Night

NNE wind around 10 kt. Mostly clear. 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.