Dangerous Cold Persists through Monday; Wintry Weather from the Northern Plains to the Great Lakes

Bitter cold temperatures and dangerous wind chills will persist from Florida to the Northeast through Monday. Daily record low temperatures are forecast across the Southeast and Florida, with some all-time February low temperature records possible across Florida. An Alberta clipper will spread wintry precipitation across the Northern Plains today and into the upper Great Lakes into tonight. Read More >

Hazardous Weather Conditions

Small Craft Advisory until February 2, 04:00 AM CST

For More Weather Information:

Key West, FL Local Forecast Office

Boot Key Harbor FL

Marine Point Forecast

[NOTICE]

Monday
High: 60 °F
N 10kt
< 1ft
Monday Night
Low: 51 °F
NNE 10kt
< 1ft
Tuesday
High: 68 °F
NNE 10kt
< 1ft
Tuesday Night
Low: 60 °F
NE 10kt
< 1ft
Wednesday
High: 70 °F
Light Wind
< 1ft
Wednesday Night
Low: 60 °F
Light Wind
< 1ft
Thursday
High: 69 °F
WNW 10kt
< 1ft
Thursday Night
Low: 53 °F
NNW 15kt
< 1ft
Friday
High: 64 °F
NNW 15kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:15 am CST Feb 2, 2026
Forecast Valid: 2am CST Feb 2, 2026-6pm CST Feb 8, 2026

View Nearby Observations

Detailed Forecast

Monday

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

Monday Night

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

Tuesday

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

Tuesday Night

NE wind 5 to 10 kt. Mostly cloudy. Seas 1 ft or less.

Wednesday

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

Wednesday Night

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

Thursday

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

Thursday Night

NNW wind around 15 kt. A slight chance of showers. Seas 1 ft or less.

Friday

NNW wind 10 to 15 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.