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 21, 11:00 PM EST

For More Weather Information:

San Juan, PR Local Forecast Office

2NM WSW Charlotte Amalie VI

Marine Point Forecast

[NOTICE]

Today
High: 82 °F
E 21kt
4-5ft
Tonight
Low: 80 °F
ENE 21kt
4ft
Wednesday
High: 82 °F
ENE 21kt
4ft
Wednesday Night
Low: 80 °F
ENE 22kt
4ft
Thursday
High: 82 °F
E 20kt
4ft
Thursday Night
Low: 80 °F
E 17kt
4ft
Friday
High: 82 °F
E 18kt
3-4ft
Friday Night
Low: 80 °F
E 18kt
3ft
Saturday
High: 82 °F
E 17kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:23 am EST Jan 20, 2026
Forecast Valid: 5am EST Jan 20, 2026-6pm EST Jan 26, 2026

View Nearby Observations

Detailed Forecast

Today

E wind 19 to 21 kt, with gusts as high as 28 kt. Scattered showers, mainly after 11am. Seas 4 to 5 ft.

Tonight

ENE wind around 21 kt, with gusts as high as 28 kt. Scattered showers, mainly after 2am. Seas around 4 ft.

Wednesday

ENE wind around 21 kt, with gusts as high as 28 kt. Scattered showers. Seas around 4 ft.

Wednesday Night

ENE wind 20 to 22 kt, with gusts as high as 30 kt. Scattered showers, with thunderstorms also possible after 11pm. Seas around 4 ft.

Thursday

E wind 17 to 20 kt, with gusts as high as 27 kt. Showers likely and possibly a thunderstorm before 11am, then isolated showers. Seas around 4 ft.

Thursday Night

E wind around 17 kt, with gusts as high as 23 kt. Scattered showers and thunderstorms. Seas around 4 ft.

Friday

E wind 15 to 18 kt, with gusts as high as 24 kt. Scattered showers. Seas 3 to 4 ft.

Friday Night

E wind 16 to 18 kt, with gusts as high as 24 kt. Partly cloudy. Seas around 3 ft.

Saturday

E wind around 17 kt, with gusts as high as 24 kt. Sunny. Seas around 3 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.