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Hazardous Weather Conditions

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Partly Cloudy

79°F

26°C

Humidity 84%
Wind Speed Calm
Barometer 29.98 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 4 Oct 5:56 am AST
Extended Forecast for

Loiza PR

Heat Advisory October 4, 10:00am until October 4, 04:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Scattered showers, mainly after noon. Partly sunny, with a high near 91. East wind 6 to 13 mph. Chance of precipitation is 50%.

    High: 91 °F

    Scattered
    Showers

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before midnight, then scattered showers. Mostly cloudy, with a low around 77. East southeast wind 7 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 77 °F

    Showers
    Likely

  • Monday

    Monday: Scattered showers, mainly before noon. Mostly sunny, with a high near 90. East wind 6 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 90 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Isolated showers. Partly cloudy, with a low around 78. East southeast wind around 9 mph. Chance of precipitation is 20%.

    Low: 78 °F

    Isolated
    Showers

  • Tuesday

    Tuesday: Scattered showers. Mostly sunny, with a high near 91. East wind 8 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 91 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers, mainly before midnight. Partly cloudy, with a low around 78. East wind 7 to 9 mph. Chance of precipitation is 30%.

    Low: 78 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers. Partly sunny, with a high near 90. East wind 8 to 13 mph. Chance of precipitation is 40%.

    High: 90 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Mostly cloudy, with a low around 77. East southeast wind around 10 mph. Chance of precipitation is 40%.

    Low: 77 °F

    Scattered
    Showers

  • Thursday

    Thursday: Showers likely, mainly after noon. Mostly cloudy, with a high near 91. East wind 10 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 91 °F

    Showers
    Likely

Detailed Forecast

Today
Scattered showers, mainly after noon. Partly sunny, with a high near 91. East wind 6 to 13 mph. Chance of precipitation is 50%.
Tonight
Showers likely and possibly a thunderstorm before midnight, then scattered showers. Mostly cloudy, with a low around 77. East southeast wind 7 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Scattered showers, mainly before noon. Mostly sunny, with a high near 90. East wind 6 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Monday Night
Isolated showers. Partly cloudy, with a low around 78. East southeast wind around 9 mph. Chance of precipitation is 20%.
Tuesday
Scattered showers. Mostly sunny, with a high near 91. East wind 8 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Tuesday Night
Scattered showers, mainly before midnight. Partly cloudy, with a low around 78. East wind 7 to 9 mph. Chance of precipitation is 30%.
Wednesday
Scattered showers. Partly sunny, with a high near 90. East wind 8 to 13 mph. Chance of precipitation is 40%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 77. East southeast wind around 10 mph. Chance of precipitation is 40%.
Thursday
Showers likely, mainly after noon. Mostly cloudy, with a high near 91. East wind 10 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 78. Chance of precipitation is 40%.
Friday
Mostly sunny, with a high near 91.
Friday Night
Partly cloudy, with a low around 77.
Saturday
Scattered showers. Mostly sunny, with a high near 91. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Loiza PR
 18.44°N 65.87°W (Elev. 3 ft)
Last Update:
3:54 am AST Oct 4, 2026
Forecast Valid:
6am AST Oct 4, 2026-6pm AST Oct 10, 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