Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Heavy Rainfall Threat to the South from Possible Tropical/Subtropical System Over the Weekend

A tropical disturbance over the Yucatan Peninsula has a High chance of developing into a tropical or subtropical depression in the Gulf over the Memorial Day Weekend. This system has the potential to bring heavy rainfall to portions of the Gulf Coast over the next 5-7 days. The threat of rip currents will also steadily increase along the Gulf from FL to LA over the holiday weekend. Read More >

Hazardous Weather Conditions

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Mostly Cloudy

79°F

26°C

Humidity 84%
Wind Speed S 3 mph
Barometer 30.03 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 25 May 6:56 am AST
Extended Forecast for

San Juan PR

  • Today

    Today: Scattered showers.  Partly sunny, with a high near 86. East wind 11 to 17 mph.  Chance of precipitation is 40%.

    Scattered
    Showers

    High: 86 °F

  • Tonight

    Tonight: Scattered showers.  Partly cloudy, with a low around 75. East wind 7 to 11 mph.  Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

    Scattered
    Showers

    Low: 75 °F

  • Saturday

    Saturday: Scattered showers. The rain could be heavy at times.  Partly sunny, with a high near 88. East wind 11 to 17 mph.  Chance of precipitation is 40%.

    Heavy Rain

    High: 88 °F

  • Saturday
    Night

    Saturday Night: Scattered showers.  Partly cloudy, with a low around 77. East wind 8 to 13 mph.  Chance of precipitation is 40%.

    Scattered
    Showers

    Low: 77 °F

  • Sunday

    Sunday: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall.  Mostly cloudy, with a high near 90. East wind 14 to 17 mph.  Chance of precipitation is 50%.

    Heavy Rain

    High: 90 °F

  • Sunday
    Night

    Sunday Night: Scattered showers and thunderstorms before midnight, then isolated showers.  Partly cloudy, with a low around 75. East wind 11 to 13 mph.  Chance of precipitation is 50%.

    Scattered
    Showers then
    Isolated
    Showers

    Low: 75 °F

  • Memorial
    Day

    Memorial Day: Scattered showers.  Mostly sunny, with a high near 88. East wind 16 to 20 mph.  Chance of precipitation is 40%.

    Scattered
    Showers

    High: 88 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 75. East wind around 10 mph.

    Partly Cloudy

    Low: 75 °F

  • Tuesday

    Tuesday: Sunny, with a high near 89. East wind 11 to 14 mph.

    Sunny

    High: 89 °F

Detailed Forecast

Today
Scattered showers. Partly sunny, with a high near 86. East wind 11 to 17 mph. Chance of precipitation is 40%.
Tonight
Scattered showers. Partly cloudy, with a low around 75. East wind 7 to 11 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Scattered showers. The rain could be heavy at times. Partly sunny, with a high near 88. East wind 11 to 17 mph. Chance of precipitation is 40%.
Saturday Night
Scattered showers. Partly cloudy, with a low around 77. East wind 8 to 13 mph. Chance of precipitation is 40%.
Sunday
Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 90. East wind 14 to 17 mph. Chance of precipitation is 50%.
Sunday Night
Scattered showers and thunderstorms before midnight, then isolated showers. Partly cloudy, with a low around 75. East wind 11 to 13 mph. Chance of precipitation is 50%.
Memorial Day
Scattered showers. Mostly sunny, with a high near 88. East wind 16 to 20 mph. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 75. East wind around 10 mph.
Tuesday
Sunny, with a high near 89. East wind 11 to 14 mph.
Tuesday Night
Partly cloudy, with a low around 77.
Wednesday
Mostly sunny, with a high near 90.
Wednesday Night
Partly cloudy, with a low around 76.
Thursday
Sunny, with a high near 90.
Click Map For Forecast
Point Forecast:
San Juan PR
 18.41°N 66.07°W (Elev. 56 ft)
4:35 am AST May 25, 2018
7am AST May 25, 2018-6pm AST May 31, 2018
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database