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

9NM E Ponce PR

Marine Point Forecast

[NOTICE]

M.L.King Day
High: 85 °F
E 13kt
2ft
Tonight
Low: 73 °F
NE 7kt
2-3ft
Tuesday
High: 84 °F
E 16kt
2ft
Tuesday Night
Low: 73 °F
NE 8kt
2ft
Wednesday
High: 83 °F
E 16kt
2ft
Wednesday Night
Low: 73 °F
NE 9kt
2ft
Thursday
High: 83 °F
E 13kt
2ft
Thursday Night
Low: 73 °F
ENE 8kt
2ft
Friday
High: 85 °F
ENE 14kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:18 am EST Jan 19, 2026
Forecast Valid: 3pm EST Jan 19, 2026-6pm EST Jan 25, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

M.L.King Day

E wind around 13 kt, with gusts as high as 22 kt. Isolated showers. Seas around 2 ft.

Tonight

NE wind around 7 kt. Isolated showers before 5am. Seas 2 to 3 ft.

Tuesday

E wind 7 to 16 kt, with gusts as high as 26 kt. Isolated showers after 8am. Seas around 2 ft.

Tuesday Night

NE wind around 8 kt. Isolated showers. Seas around 2 ft.

Wednesday

E wind 8 to 16 kt, with gusts as high as 27 kt. Isolated showers. Seas around 2 ft.

Wednesday Night

NE wind around 9 kt. Scattered showers. Seas around 2 ft.

Thursday

E wind 8 to 13 kt, with gusts as high as 21 kt. Scattered showers after 11am. Seas around 2 ft.

Thursday Night

ENE wind 5 to 8 kt. Scattered showers. Seas around 2 ft.

Friday

ENE wind 6 to 14 kt, with gusts as high as 24 kt. Scattered showers. Seas around 2 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.