National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

A Few Clouds

88°F

31°C

Humidity 66%
Wind Speed NE 14 G 23 mph
Barometer 30.02 in (1016.3 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 21 Aug 3:56 pm AST
Extended Forecast for

La Fermina PR

Heat Advisory August 21, 04:03pm until August 21, 05:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 21, 04:03pm until August 21, 05:00pm

    NOW until 5:00pm Fri

    Heat Advisory

  • Tonight

    Low: 77 °F

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers, with thunderstorms also possible after 3pm. Increasing clouds, with a high near 87. East southeast wind 7 to 11 mph. Chance of precipitation is 50%.

    High: 87 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: Scattered showers. Mostly cloudy, with a low around 77. East wind 6 to 8 mph. Chance of precipitation is 50%.

    Low: 77 °F

    Scattered
    Showers

  • Sunday

    Sunday: Scattered showers, mainly before noon. Mostly sunny, with a high near 87. East wind 9 to 13 mph. Chance of precipitation is 30%.

    High: 87 °F

    Scattered
    Showers

  • Sunday Night

    Sunday Night: Scattered showers. Mostly cloudy, with a low around 76. East wind around 8 mph. Chance of precipitation is 40%.

    Low: 76 °F

    Scattered
    Showers

  • Monday

    Monday: Isolated showers. Mostly sunny, with a high near 87. East wind 8 to 11 mph. Chance of precipitation is 20%.

    High: 87 °F

    Isolated
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 77. East wind 6 to 8 mph.

    Low: 77 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Scattered showers. Partly sunny, with a high near 87. East southeast wind 8 to 11 mph. Chance of precipitation is 40%.

    High: 87 °F

    Scattered
    Showers

Detailed Forecast

Tonight
Scattered showers, mainly before 9pm. Partly cloudy, with a low around 77. East northeast wind 7 to 11 mph. Chance of precipitation is 30%.
Saturday
Scattered showers, with thunderstorms also possible after 3pm. Increasing clouds, with a high near 87. East southeast wind 7 to 11 mph. Chance of precipitation is 50%.
Saturday Night
Scattered showers. Mostly cloudy, with a low around 77. East wind 6 to 8 mph. Chance of precipitation is 50%.
Sunday
Scattered showers, mainly before noon. Mostly sunny, with a high near 87. East wind 9 to 13 mph. Chance of precipitation is 30%.
Sunday Night
Scattered showers. Mostly cloudy, with a low around 76. East wind around 8 mph. Chance of precipitation is 40%.
Monday
Isolated showers. Mostly sunny, with a high near 87. East wind 8 to 11 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 77. East wind 6 to 8 mph.
Tuesday
Scattered showers. Partly sunny, with a high near 87. East southeast wind 8 to 11 mph. Chance of precipitation is 40%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 77. East wind 6 to 8 mph. Chance of precipitation is 60%.
Wednesday
Showers likely, mainly before noon. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 77. Chance of precipitation is 40%.
Thursday
Mostly sunny, with a high near 87.
Thursday Night
Scattered showers. Partly cloudy, with a low around 77. Chance of precipitation is 30%.
Friday
Scattered showers. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
La Fermina PR
 18.19°N 65.84°W (Elev. 522 ft)
Last Update:
2:10 pm AST Aug 21, 2026
Forecast Valid:
4pm AST Aug 21, 2026-6pm AST Aug 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation