Snow May Produce Poor Travel Conditions in the North-Central U.S. and East Coast

A strong cold front sweeping across the Northern Plains may bring snow showers and snow squalls from eastern Montana to north-central Nebraska, with blizzard conditions possible in eastern North Dakota and northwestern Montana. Heavy snow is expected to persist downwind of the Great Lakes. Snow showers will spread up the East Coast across the Mid-Atlantic and Northeast coasts. Read More >

Hazardous Weather Conditions

Small Craft Advisory until January 18, 05:00 PM EST

For More Weather Information:

San Juan, PR Local Forecast Office

3NM NW San Juan PR

Marine Point Forecast

[NOTICE]

This Afternoon
High: 83 °F
E 14kt
6ft
Tonight
Low: 74 °F
E 10kt
5ft
M.L.King Day
High: 82 °F
E 15kt
5ft
Monday Night
Low: 80 °F
E 10kt
5ft
Tuesday
High: 82 °F
E 14kt
5ft
Tuesday Night
Low: 80 °F
E 11kt
5ft
Wednesday
High: 82 °F
E 16kt
5ft
Wednesday Night
Low: 80 °F
E 13kt
6ft
Thursday
High: 82 °F
E 15kt
6ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:49 am EST Jan 18, 2026
Forecast Valid: 2pm EST Jan 18, 2026-6pm EST Jan 24, 2026

View Nearby Observations

Detailed Forecast

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

This Afternoon

E wind 12 to 14 kt, with gusts as high as 20 kt. Isolated showers. Seas around 6 ft.

Tonight

E wind 8 to 10 kt. Scattered showers, mainly between 11pm and 5am. Seas around 5 ft.

M.L.King Day

E wind 7 to 15 kt. Scattered showers, mainly after 2pm. Seas around 5 ft.

Monday Night

E wind around 10 kt. Scattered showers, mainly before 11pm. Seas around 5 ft.

Tuesday

E wind 10 to 14 kt, with gusts as high as 20 kt. Scattered showers, mainly after 11am. Seas around 5 ft.

Tuesday Night

E wind around 11 kt. Scattered showers. Seas around 5 ft.

Wednesday

E wind 11 to 16 kt, with gusts as high as 22 kt. Showers likely, mainly before 11am. Seas around 5 ft.

Wednesday Night

E wind around 13 kt. Scattered showers. Seas around 6 ft.

Thursday

E wind 12 to 15 kt, with gusts as high as 21 kt. Showers likely. Seas around 6 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.