Tracking a Winter Storm; Unusual Early-Season Heat Wave in the Southwest

A major winter storm will organize across the Northern Plains today and then rapidly strengthen as it moves into the Great Lakes on Sunday. Heavy snow and blowing snow are likely to persist over the Great Lakes into Monday night. Dry and gusty winds will produce a critical fire risk across the central/southern Plains. An early heatwave will begin to intensify over the western U.S. into next week. Read More >

For More Weather Information:

San Juan, PR Local Forecast Office

27NM S San Juan PR

Marine Point Forecast

[NOTICE]

Today
High: 80 °F
E 13kt
3ft
Tonight
Low: 79 °F
ENE 10kt
3ft
Sunday
High: 80 °F
E 15kt
3-4ft
Sunday Night
Low: 79 °F
E 15kt
4ft
Monday
High: 80 °F
E 15kt
5ft
Monday Night
Low: 79 °F
E 14kt
5ft
Tuesday
High: 80 °F
E 14kt
5ft
Tuesday Night
Low: 79 °F
ENE 11kt
4ft
Wednesday
High: 80 °F
E 13kt
4ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:25 am EDT Mar 14, 2026
Forecast Valid: 9am EDT Mar 14, 2026-6pm EDT Mar 20, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Today

E wind 10 to 13 kt. Isolated showers before noon. Seas around 3 ft.

Tonight

ENE wind around 10 kt. Scattered showers, mainly after 3am. Seas around 3 ft.

Sunday

E wind 11 to 15 kt. Showers likely, mainly between 9am and noon. Seas 3 to 4 ft.

Sunday Night

E wind 12 to 15 kt. Scattered showers, mainly after midnight. Seas around 4 ft.

Monday

E wind around 15 kt. Scattered showers, mainly after noon. Seas around 5 ft.

Monday Night

E wind 12 to 14 kt. Scattered showers, mainly after midnight. Seas around 5 ft.

Tuesday

E wind around 14 kt. Scattered showers. Seas around 5 ft.

Tuesday Night

ENE wind 9 to 11 kt. Scattered showers. Seas around 4 ft.

Wednesday

E wind 10 to 13 kt. Scattered showers. Seas around 4 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.