Early Heat Wave in the West; Fire Concerns in the 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. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. 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]

Today
High: 81 °F
E 16kt
5-6ft

Small Craft Advisory
Tonight
Low: 79 °F
E 10kt
5ft

Small Craft Advisory
Wednesday
High: 81 °F
E 15kt
5ft

Small Craft Advisory
Wednesday Night
Low: 79 °F
E 9kt
5ft
Thursday
High: 81 °F
E 15kt
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

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:56 am EDT Mar 17, 2026
Forecast Valid: 6am EDT Mar 17, 2026-6pm EDT Mar 23, 2026

View Nearby Observations

Detailed Forecast

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

Today

E wind 12 to 16 kt, with gusts as high as 23 kt. Isolated showers. Seas 5 to 6 ft.

Tonight

E wind 8 to 10 kt. Scattered showers, mainly after 9pm. Seas around 5 ft.

Wednesday

E wind 10 to 15 kt. Scattered showers, mainly between noon and 3pm. Seas around 5 ft.

Wednesday Night

E wind 6 to 9 kt. Isolated showers before 9pm. Seas around 5 ft.

Thursday

E wind 7 to 15 kt, with gusts as high as 21 kt. Scattered showers. Seas around 4 ft.

Thursday Night

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

Friday

Variable winds less than 5 kt becoming SE 5 to 9 kt in the morning. Scattered showers after noon. Seas around 4 ft.

Friday Night

Variable winds 5 kt or less. Partly cloudy. Seas around 4 ft.

Saturday

Variable winds less than 5 kt becoming E 5 to 10 kt in the morning. Showers likely. Seas 3 to 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.