Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East

A significant, long-duration winter storm will bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Widespread travel disruptions, prolonged power outages, and vast tree damage is likely. Frigid temperatures, gusty winds, and dangerous wind chills will expand from the north-central US to the Southern Plains, MS Valley, and 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 NE San Juan PR

Marine Point Forecast

[NOTICE]

This Afternoon
High: 81 °F
E 12kt
< 1ft
Tonight
Low: 77 °F
E 10kt
< 1ft
Saturday
High: 83 °F
E 13kt
< 1ft
Saturday Night
Low: 76 °F
E 12kt
< 1ft
Sunday
High: 83 °F
E 15kt
< 1ft
Sunday Night
Low: 77 °F
E 12kt
< 1ft
Monday
High: 83 °F
E 13kt
< 1ft
Monday Night
Low: 76 °F
ESE 9kt
< 1ft
Tuesday
High: 84 °F
⇑E 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:56 pm EST Jan 23, 2026
Forecast Valid: 4pm EST Jan 23, 2026-6pm EST Jan 30, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM AST THIS EVENING...

This Afternoon

E wind around 12 kt. Scattered showers. Seas 1 ft or less.

Tonight

E wind 8 to 10 kt. Showers likely, mainly after 2am. Seas 1 ft or less.

Saturday

E wind 9 to 13 kt. Scattered showers. Seas 1 ft or less.

Saturday Night

E wind 9 to 12 kt. Scattered showers, mainly after 2am. Seas 1 ft or less.

Sunday

E wind 11 to 15 kt, with gusts as high as 21 kt. Isolated showers before 11am. Seas 1 ft or less.

Sunday Night

E wind 9 to 12 kt. Isolated showers. Seas 1 ft or less.

Monday

E wind 7 to 13 kt. Mostly sunny. Seas 1 ft or less.

Monday Night

ESE wind 6 to 9 kt. Partly cloudy. Seas 1 ft or less.

Tuesday

Variable winds less than 5 kt becoming E 5 to 10 kt in the morning. Mostly sunny. Seas 1 ft or less.

*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.