Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Hazardous Weather Conditions

Small Craft Advisory until January 20, 10:00 AM CST

For More Weather Information:

Key West, FL Local Forecast Office

5NM SE Content Keys FL

Marine Point Forecast

[NOTICE]

Tuesday
High: 70 °F
NNE 15kt
< 1ft
Tuesday Night
Low: 65 °F
NE 15kt
< 1ft
Wednesday
High: 76 °F
ENE 15kt
< 1ft
Wednesday Night
Low: 68 °F
NE 15kt
< 1ft
Thursday
High: 77 °F
ENE 10kt
< 1ft
Thursday Night
Low: 70 °F
ENE 10kt
< 1ft
Friday
High: 78 °F
ENE 10kt
< 1ft
Friday Night
Low: 71 °F
ENE 10kt
< 1ft
Saturday
High: 80 °F
E 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:15 am CST Jan 20, 2026
Forecast Valid: 1am CST Jan 20, 2026-6pm CST Jan 26, 2026

View Nearby Observations

Detailed Forecast

Tuesday

NNE wind around 15 kt. Mostly sunny. Seas 1 ft or less.

Tuesday Night

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

Wednesday

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

Wednesday Night

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

Thursday

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

Thursday Night

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

Friday

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

Friday Night

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

Saturday

E 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.