Prolonged Extreme Cold; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the Gulf Coast, upper Ohio Valley, Mid-Atlantic, and Southeast U.S. into this weekend. A rapidly deepening storm centered just off the North Carolina coast Friday night through Saturday night will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia. Read More >

For More Weather Information:

San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]

Today
High: 82 °F
E 13kt
4-5ft
Tonight
Low: 82 °F
ESE 8kt
4ft
Saturday
High: 82 °F
ESE 10kt
4-5ft
Saturday Night
Low: 82 °F
SSE 7kt
4-5ft
Sunday
High: 82 °F
SSE 11kt⇓
4ft
Sunday Night
Low: 82 °F
Light Wind
3ft
Monday
High: 82 °F
⇑N 16kt
3-5ft
Monday Night
Low: 82 °F
N 15kt
7-8ft
Tuesday
High: 82 °F
NNE 15kt
7ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:28 am EST Jan 30, 2026
Forecast Valid: 8am EST Jan 30, 2026-6pm EST Feb 5, 2026

View Nearby Observations

Detailed Forecast

Today

E wind 7 to 13 kt. Showers likely, mainly between 11am and 2pm. Seas 4 to 5 ft.

Tonight

ESE wind 6 to 8 kt. Isolated showers after 11pm. Seas around 4 ft.

Saturday

ESE wind 7 to 10 kt. Showers likely, mainly after 2pm. Seas 4 to 5 ft.

Saturday Night

SSE wind 5 to 7 kt. Scattered showers. Seas 4 to 5 ft.

Sunday

SSE wind 6 to 11 kt becoming variable and less than 5 kt in the afternoon. Isolated showers, then showers likely and possibly a thunderstorm after 11am. Seas around 4 ft.

Sunday Night

Variable winds 5 kt or less. Isolated showers, then showers likely and possibly a thunderstorm after 11pm. Seas around 3 ft.

Monday

Variable winds less than 5 kt becoming N 11 to 16 kt in the morning. Showers likely, mainly after 11am. Seas 3 to 5 ft.

Monday Night

N wind around 15 kt, with gusts as high as 21 kt. Showers likely. Seas 7 to 8 ft.

Tuesday

NNE wind 13 to 15 kt. Showers likely. Seas around 7 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.