Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Hazardous Weather Conditions

Small Craft Advisory until March 18, 06:00 PM EDT

For More Weather Information:

San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]

This Afternoon
High: 81 °F
E 15kt
5ft

Small Craft Advisory
Tonight
Low: 79 °F
ESE 9kt
5ft
Thursday
High: 81 °F
E 14kt
4ft
Thursday Night
Low: 79 °F
ESE 7kt⇓
4ft
Friday
High: 81 °F
SE 9kt
4ft
Friday Night
Low: 79 °F
Light Wind
4ft
Saturday
High: 81 °F
⇑E 10kt
3-4ft
Saturday Night
Low: 79 °F
Light Wind
3ft
Sunday
High: 81 °F
⇑NNE 10kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 9:27 am EDT Mar 18, 2026
Forecast Valid: 12pm EDT Mar 18, 2026-6pm EDT Mar 24, 2026

View Nearby Observations

Detailed Forecast

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

This Afternoon

E wind around 15 kt, with gusts as high as 21 kt. Isolated showers. Seas around 5 ft.

Tonight

ESE wind 5 to 9 kt. Scattered showers, mainly after midnight. Seas around 5 ft.

Thursday

E wind 6 to 14 kt. Scattered showers, mainly after 3pm. Seas around 4 ft.

Thursday Night

ESE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Isolated showers before 9pm. Seas around 4 ft.

Friday

SE wind 5 to 9 kt. Scattered showers, mainly after noon. Seas around 4 ft.

Friday Night

Variable winds 5 kt or less. Isolated showers. Seas around 4 ft.

Saturday

Variable winds less than 5 kt becoming E 5 to 10 kt in the afternoon. Showers likely after noon. Seas 3 to 4 ft.

Saturday Night

Variable winds 5 kt or less. Showers likely. Seas around 3 ft.

Sunday

Variable winds less than 5 kt becoming NNE 5 to 10 kt in the morning. Showers likely. 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.