Major Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold in the North-Central U.S.

A large, long-duration winter storm is expected to bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies/Plains into the Mid-South beginning Friday, spreading eastward to the Mid-Atlantic and New England this weekend. An Arctic front will bring frigid temperatures and gusty winds that will lead to dangerous wind chills from the Northern Plains and Upper Midwest. Read More >

Hazardous Weather Conditions

Small Craft Advisory until January 23, 05:00 PM EST

For More Weather Information:

San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]

This Afternoon
High: 82 °F
E 14kt
6ft

Small Craft Advisory
Tonight
Low: 80 °F
E 11kt
5-6ft

Small Craft Advisory
Friday
High: 82 °F
E 13kt
5ft

Small Craft Advisory
Friday Night
Low: 80 °F
E 10kt
4-5ft
Saturday
High: 82 °F
E 13kt
4ft
Saturday Night
Low: 80 °F
E 10kt
4ft
Sunday
High: 82 °F
E 15kt
4ft
Sunday Night
Low: 80 °F
E 10kt
4ft
Monday
High: 82 °F
E 13kt
4ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:27 pm EST Jan 22, 2026
Forecast Valid: 4pm EST Jan 22, 2026-6pm EST Jan 29, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...

This Afternoon

E wind around 14 kt. Showers likely. Seas around 6 ft.

Tonight

E wind 7 to 11 kt. Showers likely, mainly before 8pm. Seas 5 to 6 ft.

Friday

E wind 7 to 13 kt. Scattered showers before 11am, then scattered showers and thunderstorms between 11am and 2pm, then scattered showers after 2pm. Seas around 5 ft.

Friday Night

E wind 6 to 10 kt. Scattered showers, then showers likely and possibly a thunderstorm after 2am. Seas 4 to 5 ft.

Saturday

E wind 7 to 13 kt. Scattered showers, mainly before 11am. Seas around 4 ft.

Saturday Night

E wind 8 to 10 kt. Isolated showers. Seas around 4 ft.

Sunday

E wind 10 to 15 kt, with gusts as high as 21 kt. Mostly sunny. Seas around 4 ft.

Sunday Night

E wind 7 to 10 kt. Clear. Seas around 4 ft.

Monday

E wind 6 to 13 kt. Mostly sunny. Seas around 4 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.