Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. Read More >

Hazardous Weather Conditions

For More Weather Information:

San Juan, PR Local Forecast Office

5NM NE San Juan PR

Marine Point Forecast

[NOTICE]
    • Wednesday

      Wednesday:E wind 10 to 14 kt, with gusts as high as 20 kt. Showers likely, with thunderstorms also possible after noon.   Seas around 4 ft.

      High: 85 °F

      E 14kt
      4ft

    • Wednesday Night

      Wednesday Night:E wind around 11 kt. Scattered showers, mainly after 3am.   Seas around 4 ft.

      Low: 80 °F

      E 11kt
      4ft

    • Thursday

      Thursday:E wind 11 to 14 kt. Scattered showers, mainly between 9am and noon.   Seas around 4 ft.

      High: 85 °F

      E 14kt
      4ft

    • Thursday Night

      Thursday Night:E wind around 10 kt. Clear. Seas around 3 ft.

      Low: 80 °F

      E 10kt
      3ft

    • Friday

      Friday:ENE wind 9 to 14 kt. Isolated showers.   Seas around 3 ft.

      High: 85 °F

      ENE 14kt
      3ft

    • Friday Night

      Friday Night:E wind 8 to 10 kt. Scattered showers.   Seas around 3 ft.

      Low: 80 °F

      E 10kt
      3ft

    • Saturday

      Saturday:E wind 7 to 14 kt, with gusts as high as 20 kt. Mostly sunny. Seas around 2 ft.

      High: 85 °F

      E 14kt
      2ft

    • Saturday Night

      Saturday Night:ESE wind 7 to 10 kt. Mostly clear. Seas around 2 ft.

      Low: 80 °F

      ESE 10kt
      2ft

    • Sunday

      Sunday:E wind 9 to 14 kt. Mostly sunny. Seas 2 to 3 ft.

      High: 86 °F

      E 14kt
      2-3ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:59 am EDT Jul 16, 2025
Forecast Valid: 3am EDT Jul 16, 2025-6pm EDT Jul 22, 2025

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Detailed Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Wednesday
E wind 10 to 14 kt, with gusts as high as 20 kt. Showers likely, with thunderstorms also possible after noon. Seas around 4 ft.
Wednesday Night
E wind around 11 kt. Scattered showers, mainly after 3am. Seas around 4 ft.
Thursday
E wind 11 to 14 kt. Scattered showers, mainly between 9am and noon. Seas around 4 ft.
Thursday Night
E wind around 10 kt. Clear. Seas around 3 ft.
Friday
ENE wind 9 to 14 kt. Isolated showers. Seas around 3 ft.
Friday Night
E wind 8 to 10 kt. Scattered showers. Seas around 3 ft.
Saturday
E wind 7 to 14 kt, with gusts as high as 20 kt. Mostly sunny. Seas around 2 ft.
Saturday Night
ESE wind 7 to 10 kt. Mostly clear. Seas around 2 ft.
Sunday
E wind 9 to 14 kt. Mostly sunny. Seas 2 to 3 ft.

Winds and seas higher in and near thunderstorms.

*Notices:

  1. 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.
  2. 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.
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ABOUT THIS FORECAST

Point Forecast: 18.46°N 65.99°W
Last Update: 1:59 am EDT Jul 16, 2025
Forecast Valid: 3am EDT Jul 16, 2025-6pm EDT Jul 22, 2025
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