Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

For More Weather Information:

San Juan, PR Local Forecast Office

5NM NE San Juan PR

Marine Point Forecast

[NOTICE]

Tonight
Low: 82 °F
SSE 6kt⇓
3-4ft
Tuesday
High: 83 °F
⇑E 12kt
3ft
Tuesday Night
Low: 82 °F
ESE 7kt⇓
3ft
Wednesday
High: 83 °F
⇑E 12kt
2-3ft
Wednesday Night
Low: 82 °F
E 10kt
3ft
Thursday
High: 83 °F
ESE 13kt
3-4ft
Thursday Night
Low: 82 °F
E 10kt
4-5ft
Friday
High: 83 °F
E 14kt
5ft
Friday Night
Low: 82 °F
E 11kt
4-5ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:56 pm EST Dec 8, 2025
Forecast Valid: 9pm EST Dec 8, 2025-6pm EST Dec 15, 2025

View Nearby Observations

Detailed Forecast

Tonight

SSE wind around 6 kt becoming variable and less than 5 kt after midnight. Isolated showers after 11pm. Seas 3 to 4 ft.

Tuesday

Variable winds less than 5 kt becoming E 7 to 12 kt in the morning. Scattered showers, mainly before 11am. Seas around 3 ft.

Tuesday Night

ESE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Isolated showers before 8pm, then isolated showers after 2am. Seas around 3 ft.

Wednesday

Variable winds less than 5 kt becoming E 7 to 12 kt in the morning. Scattered showers, mainly after 11am. Seas 2 to 3 ft.

Wednesday Night

E wind 7 to 10 kt. Scattered showers. Seas around 3 ft.

Thursday

ESE wind 9 to 13 kt. Scattered showers. Seas 3 to 4 ft.

Thursday Night

E wind 8 to 10 kt. Partly cloudy. Seas 4 to 5 ft.

Friday

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

Friday Night

E wind 9 to 11 kt. Partly cloudy. Seas 4 to 5 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.