Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Hazardous Weather Conditions

Small Craft Advisory in effect from January 21, 11:00 PM EST until January 22, 05:00 PM EST

For More Weather Information:

San Juan, PR Local Forecast Office

26NM E Ponce PR

Marine Point Forecast

[NOTICE]

Wednesday
High: 82 °F
ENE 17kt
3-4ft
Wednesday Night
Low: 80 °F
ENE 12kt
3-4ft
Thursday
High: 82 °F
E 15kt
4ft
Thursday Night
Low: 80 °F
ENE 9kt
3ft
Friday
High: 82 °F
E 14kt
3ft
Friday Night
Low: 80 °F
ENE 9kt
3ft
Saturday
High: 82 °F
E 11kt
2ft
Saturday Night
Low: 80 °F
ENE 11kt
2-3ft
Sunday
High: 82 °F
E 13kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:47 pm EST Jan 20, 2026
Forecast Valid: 1am EST Jan 21, 2026-6pm EST Jan 27, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Wednesday

ENE wind 11 to 17 kt, with gusts as high as 23 kt. Scattered showers, mainly before 11am. Seas 3 to 4 ft.

Wednesday Night

ENE wind around 12 kt. Scattered showers, with thunderstorms also possible after 11pm. Seas 3 to 4 ft.

Thursday

E wind 11 to 15 kt. Scattered showers. Seas around 4 ft.

Thursday Night

ENE wind around 9 kt. Showers likely and possibly a thunderstorm. Seas around 3 ft.

Friday

E wind 10 to 14 kt, with gusts as high as 20 kt. Scattered showers and thunderstorms. Seas around 3 ft.

Friday Night

ENE wind around 9 kt. Isolated showers. Seas around 3 ft.

Saturday

E wind 8 to 11 kt. Sunny. Seas around 2 ft.

Saturday Night

ENE wind 9 to 11 kt. Mostly clear. Seas 2 to 3 ft.

Sunday

E wind 10 to 13 kt. Sunny. Seas around 3 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.