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.

Partly Cloudy

86°F

30°C

Humidity 67%
Wind Speed Calm
Barometer 29.90 in (1012.4 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 19 Sep 2:56 pm AST
Extended Forecast for

Punta Santiago PR

Heat Advisory September 19, 03:04pm until September 19, 05:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 19, 03:04pm until September 19, 05:00pm

    NOW until 5:00pm Sat

    Heat Advisory

  • This Afternoon

    High: 89 °F

    Isolated
    Showers

  • Tonight

    Tonight: Showers likely, mainly after 3am. Mostly cloudy, with a low around 79. East wind 5 to 7 mph. Chance of precipitation is 60%.

    Low: 79 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely, mainly before noon. Mostly cloudy, with a high near 89. Southeast wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 89 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Scattered showers. Mostly cloudy, with a low around 79. East southeast wind around 6 mph. Chance of precipitation is 40%.

    Low: 79 °F

    Scattered
    Showers

  • Monday

    Monday: Scattered showers. Partly sunny, with a high near 89. Southeast wind 7 to 10 mph. Chance of precipitation is 50%.

    High: 89 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Scattered showers, mainly before midnight. Mostly cloudy, with a low around 79. East southeast wind around 6 mph. Chance of precipitation is 50%.

    Low: 79 °F

    Scattered
    Showers then
    Isolated
    Showers

  • Tuesday

    Tuesday: Scattered showers. Mostly sunny, with a high near 90. East wind around 10 mph. Chance of precipitation is 30%.

    High: 90 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers. Partly cloudy, with a low around 79. East wind around 8 mph. Chance of precipitation is 30%.

    Low: 79 °F

    Scattered
    Showers

Detailed Forecast

This Afternoon
Isolated showers. Mostly sunny, with a high near 89. East southeast wind around 8 mph. Chance of precipitation is 10%.
Tonight
Showers likely, mainly after 3am. Mostly cloudy, with a low around 79. East wind 5 to 7 mph. Chance of precipitation is 60%.
Sunday
Showers likely, mainly before noon. Mostly cloudy, with a high near 89. Southeast wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Scattered showers. Mostly cloudy, with a low around 79. East southeast wind around 6 mph. Chance of precipitation is 40%.
Monday
Scattered showers. Partly sunny, with a high near 89. Southeast wind 7 to 10 mph. Chance of precipitation is 50%.
Monday Night
Scattered showers, mainly before midnight. Mostly cloudy, with a low around 79. East southeast wind around 6 mph. Chance of precipitation is 50%.
Tuesday
Scattered showers. Mostly sunny, with a high near 90. East wind around 10 mph. Chance of precipitation is 30%.
Tuesday Night
Scattered showers. Partly cloudy, with a low around 79. East wind around 8 mph. Chance of precipitation is 30%.
Wednesday
Scattered showers, mainly before noon. Mostly sunny, with a high near 89. East wind around 11 mph. Chance of precipitation is 30%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 79. Chance of precipitation is 40%.
Thursday
Scattered showers. Partly sunny, with a high near 89. Chance of precipitation is 40%.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 80. Chance of precipitation is 40%.
Friday
Scattered showers. Partly sunny, with a high near 90. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Punta Santiago PR
 18.15°N 65.77°W (Elev. 20 ft)
Last Update:
2:11 pm AST Sep 19, 2026
Forecast Valid:
3pm AST Sep 19, 2026-6pm AST Sep 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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