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 NW San Juan PR

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:E wind around 13 kt. Scattered showers.   Seas around 4 ft.

      High: 82 °F

      E 13kt
      4ft

    • Tonight

      Tonight:ESE wind 6 to 9 kt. Isolated showers after 11pm.   Seas around 4 ft.

      Low: 82 °F

      ESE 9kt
      4ft

    • Saturday

      Saturday:SE wind 6 to 14 kt. Isolated showers before 11am, then scattered showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm.   Seas 4 to 5 ft.

      High: 82 °F

      SE 14kt
      4-5ft

    • Saturday Night

      Saturday Night:SE wind 5 to 8 kt. Showers likely and possibly a thunderstorm before 11pm, then scattered showers and thunderstorms after 11pm.   Seas 4 to 5 ft.

      Low: 82 °F

      SE 8kt
      4-5ft

    • Sunday

      Sunday:SSE wind 5 to 9 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.

      High: 82 °F

      SSE 9kt⇓
      4ft

    • Sunday Night

      Sunday Night:Variable winds less than 5 kt becoming WNW around 6 kt. Isolated showers, then showers likely and possibly a thunderstorm after 11pm.   Seas around 3 ft.

      Low: 82 °F

      ⇑WNW 6kt
      3ft

    • Monday

      Monday:Variable winds less than 5 kt becoming N 10 to 15 kt in the morning. Winds could gust as high as 21 kt. Showers likely, mainly after 11am.   Seas 3 to 5 ft.

      High: 82 °F

      ⇑N 15kt
      3-5ft

    • Monday Night

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

      Low: 82 °F

      N 15kt
      7-8ft

    • Tuesday

      Tuesday:NNE wind around 15 kt, with gusts as high as 21 kt. Showers likely.   Seas around 7 ft.

      High: 82 °F

      NNE 15kt
      7ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:45 pm EST Jan 30, 2026
Forecast Valid: 3pm EST Jan 30, 2026-6pm EST Feb 5, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
E wind around 13 kt. Scattered showers. Seas around 4 ft.
Tonight
ESE wind 6 to 9 kt. Isolated showers after 11pm. Seas around 4 ft.
Saturday
SE wind 6 to 14 kt. Isolated showers before 11am, then scattered showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Seas 4 to 5 ft.
Saturday Night
SE wind 5 to 8 kt. Showers likely and possibly a thunderstorm before 11pm, then scattered showers and thunderstorms after 11pm. Seas 4 to 5 ft.
Sunday
SSE wind 5 to 9 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 less than 5 kt becoming WNW around 6 kt. Isolated showers, then showers likely and possibly a thunderstorm after 11pm. Seas around 3 ft.
Monday
Variable winds less than 5 kt becoming N 10 to 15 kt in the morning. Winds could gust as high as 21 kt. 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 around 15 kt, with gusts as high as 21 kt. Showers likely. Seas around 7 ft.

*Notices:

  1. 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.
  2. 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.
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ABOUT THIS FORECAST

Point Forecast: 18.46°N 66.13°W
Last Update: 12:45 pm EST Jan 30, 2026
Forecast Valid: 3pm EST Jan 30, 2026-6pm EST Feb 5, 2026
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