Prolonged Extreme Cold; Eastern U.S. Winter Storm

Another Arctic blast will surge south across the northern Plains tonight, crossing the Midwest and reaching the Gulf Coast Friday night. Dangerously cold temperatures will persist across the eastern U.S. into early February. There is increasing confidence for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. Read More >

For More Weather Information:

San Juan, PR Local Forecast Office

27NM S San Juan PR

Marine Point Forecast

[NOTICE]

Tonight
Low: 82 °F
NE 6kt
2ft
Friday
High: 82 °F
E 10kt
2ft
Friday Night
Low: 82 °F
E 9kt
2ft
Saturday
High: 82 °F
E 12kt
2-3ft
Saturday Night
Low: 82 °F
SE 8kt
3ft
Sunday
High: 82 °F
SSE 10kt
3ft
Sunday Night
Low: 82 °F
Light Wind
3ft
Monday
High: 82 °F
⇑NNE 6kt
3ft
Monday Night
Low: 82 °F
N 15kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:56 pm EST Jan 29, 2026
Forecast Valid: 6pm EST Jan 29, 2026-6pm EST Feb 5, 2026

View Nearby Observations

Detailed Forecast

Tonight

NE wind around 6 kt. Scattered showers, mainly after 2am. Seas around 2 ft.

Friday

E wind 6 to 10 kt. Scattered showers, mainly after 11am. Seas around 2 ft.

Friday Night

E wind 7 to 9 kt. Mostly clear. Seas around 2 ft.

Saturday

E wind 9 to 12 kt. Showers likely, mainly after 11am. Seas 2 to 3 ft.

Saturday Night

SE wind around 8 kt. Scattered showers and thunderstorms. Seas around 3 ft.

Sunday

SSE wind 6 to 10 kt. Isolated showers. Seas around 3 ft.

Sunday Night

Variable winds 5 kt or less. Scattered showers. Seas around 3 ft.

Monday

Variable winds less than 5 kt becoming NNE around 6 kt in the afternoon. Scattered showers. Seas around 3 ft.

Monday Night

N wind 10 to 15 kt. Scattered showers. 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.