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 >

For More Weather Information:

San Juan, PR Local Forecast Office

6NM SE Ponce PR

Marine Point Forecast

[NOTICE]

Tonight
Low: 78 °F
ENE 11kt
2-3ft
M.L.King Day
High: 82 °F
E 14kt
2ft
Monday Night
Low: 80 °F
ENE 9kt
2ft
Tuesday
High: 82 °F
E 15kt
2ft
Tuesday Night
Low: 80 °F
ENE 10kt
2ft
Wednesday
High: 82 °F
E 16kt
2ft
Wednesday Night
Low: 80 °F
ENE 11kt
2ft
Thursday
High: 82 °F
E 15kt
2ft
Thursday Night
Low: 80 °F
E 10kt
2-3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:49 pm EST Jan 18, 2026
Forecast Valid: 10pm EST Jan 18, 2026-6pm EST Jan 25, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Tonight

ENE wind around 11 kt. Isolated showers after 2am. Seas 2 to 3 ft.

M.L.King Day

E wind 8 to 14 kt, with gusts as high as 20 kt. Isolated showers after 2pm. Seas around 2 ft.

Monday Night

ENE wind around 9 kt. Isolated showers, mainly between 11pm and 5am. Seas around 2 ft.

Tuesday

E wind 8 to 15 kt, with gusts as high as 21 kt. Isolated showers after 8am. Seas around 2 ft.

Tuesday Night

ENE wind around 10 kt. Scattered showers. Seas around 2 ft.

Wednesday

E wind 10 to 16 kt, with gusts as high as 22 kt. Isolated showers. Seas around 2 ft.

Wednesday Night

ENE wind around 11 kt. Scattered showers. Seas around 2 ft.

Thursday

E wind 11 to 15 kt. Scattered showers. Seas around 2 ft.

Thursday Night

E wind 8 to 10 kt. Scattered showers. Seas 2 to 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.