Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

For More Weather Information:

San Juan, PR Local Forecast Office

4NM NE San Juan PR

Marine Point Forecast

[NOTICE]

Today
High: 83 °F
ESE 13kt
< 1ft
Tonight
Low: 76 °F
SE 8kt
< 1ft
Sunday
High: 85 °F
S 11kt
< 1ft
Sunday Night
Low: 74 °F
⇑W 6kt
< 1ft
Monday
High: 81 °F
N 14kt
< 1ft
Monday Night
Low: 73 °F
N 16kt
< 1ft
Tuesday
High: 77 °F
NNE 16kt
< 1ft
Tuesday Night
Low: 73 °F
NE 15kt
< 1ft
Wednesday
High: 79 °F
ENE 14kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:10 am EST Jan 31, 2026
Forecast Valid: 11am EST Jan 31, 2026-6pm EST Feb 6, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Today

ESE wind 11 to 13 kt. Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.

Tonight

SE wind 6 to 8 kt. Showers and possibly a thunderstorm. Seas 1 ft or less.

Sunday

S wind 6 to 11 kt. Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 11am. Seas 1 ft or less.

Sunday Night

Variable winds less than 5 kt becoming W around 6 kt after midnight. Showers likely and possibly a thunderstorm before 2am, then scattered showers and thunderstorms after 2am. Seas 1 ft or less.

Monday

N wind 5 to 14 kt, with gusts as high as 20 kt. Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 11am. Seas 1 ft or less.

Monday Night

N wind around 16 kt, with gusts as high as 22 kt. Showers likely and possibly a thunderstorm. Seas 1 ft or less.

Tuesday

NNE wind around 16 kt, with gusts as high as 22 kt. Showers likely. Seas 1 ft or less.

Tuesday Night

NE wind 13 to 15 kt. Showers likely. Seas 1 ft or less.

Wednesday

ENE wind 11 to 14 kt. Showers likely. Seas 1 ft or less.

Winds and seas higher in and near thunderstorms.

*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.