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

Ponce PR

Marine Point Forecast

[NOTICE]

Today
High: 83 °F
E 17kt
< 1ft
Tonight
Low: 72 °F
ENE 8kt
< 1ft
Thursday
High: 83 °F
E 15kt
< 1ft
Thursday Night
Low: 73 °F
ENE 8kt
< 1ft
Friday
High: 83 °F
E 14kt
< 1ft
Friday Night
Low: 72 °F
ENE 8kt
< 1ft
Saturday
High: 82 °F
ESE 13kt
< 1ft
Saturday Night
Low: 73 °F
ENE 8kt
< 1ft
Sunday
High: 84 °F
E 13kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:42 am EST Jan 21, 2026
Forecast Valid: 6am EST Jan 21, 2026-6pm EST Jan 27, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY

Today

E wind 7 to 17 kt, with gusts as high as 27 kt. Isolated showers after 11am. Seas 1 ft or less.

Tonight

ENE wind around 8 kt. Isolated showers before 2am. Seas 1 ft or less.

Thursday

E wind 7 to 15 kt, with gusts as high as 25 kt. Showers likely and possibly a thunderstorm between 11am and 2pm, then isolated showers after 2pm. Seas 1 ft or less.

Thursday Night

ENE wind 6 to 8 kt. Scattered showers, mainly between 8pm and 11pm. Seas 1 ft or less.

Friday

NE wind 6 to 14 kt becoming E in the afternoon. Winds could gust as high as 24 kt. Scattered showers, mainly after 11am. Seas 1 ft or less.

Friday Night

ENE wind 6 to 8 kt. Isolated showers. Seas 1 ft or less.

Saturday

ENE wind 7 to 13 kt becoming ESE in the afternoon. Winds could gust as high as 22 kt. Mostly sunny. Seas 1 ft or less.

Saturday Night

ENE wind 6 to 8 kt. Partly cloudy. Seas 1 ft or less.

Sunday

E wind 7 to 13 kt, with gusts as high as 22 kt. 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.