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

79°F

26°C

Humidity 79%
Wind Speed Calm
Barometer 30.07 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 15 Jul 3:56 am AST
Extended Forecast for

Carolina PR

Heat Advisory July 15, 10:00am until July 15, 04:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Isolated showers. Partly cloudy, with a low around 77. East southeast wind around 9 mph. Chance of precipitation is 20%.

    Low: 77 °F

    Isolated
    Showers

  • Tuesday

    Tuesday: Scattered showers, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 90. Heat index values as high as 102. East wind 9 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 90 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 3am, then scattered showers. Mostly cloudy, with a low around 79. East wind 10 to 13 mph. Chance of precipitation is 60%.

    Low: 79 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 90. Heat index values as high as 103. East wind 13 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 90 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Scattered showers, mainly before midnight. Partly cloudy, with a low around 78. East wind around 10 mph. Chance of precipitation is 40%.

    Low: 78 °F

    Scattered
    Showers then
    Isolated
    Showers

  • Thursday

    Thursday: Isolated showers. Widespread haze. Mostly sunny, with a high near 91. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 91 °F

    Isolated
    Showers

  • Thursday Night

    Thursday Night: Widespread haze. Clear, with a low around 78. East wind around 10 mph.

    Low: 78 °F

    Haze

  • Friday

    Friday: Widespread haze. Mostly sunny, with a high near 91. East wind 9 to 14 mph.

    High: 91 °F

    Haze

  • Friday Night

    Friday Night: Partly cloudy, with a low around 77. East wind 7 to 9 mph.

    Low: 77 °F

    Partly Cloudy

Detailed Forecast

Overnight
Isolated showers. Partly cloudy, with a low around 77. East southeast wind around 9 mph. Chance of precipitation is 20%.
Tuesday
Scattered showers, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 90. Heat index values as high as 102. East wind 9 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
Showers likely and possibly a thunderstorm before 3am, then scattered showers. Mostly cloudy, with a low around 79. East wind 10 to 13 mph. Chance of precipitation is 60%.
Wednesday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 90. Heat index values as high as 103. East wind 13 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Wednesday Night
Scattered showers, mainly before midnight. Partly cloudy, with a low around 78. East wind around 10 mph. Chance of precipitation is 40%.
Thursday
Isolated showers. Widespread haze. Mostly sunny, with a high near 91. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Thursday Night
Widespread haze. Clear, with a low around 78. East wind around 10 mph.
Friday
Widespread haze. Mostly sunny, with a high near 91. East wind 9 to 14 mph.
Friday Night
Partly cloudy, with a low around 77. East wind 7 to 9 mph.
Saturday
Mostly sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 78.
Sunday
Mostly sunny, with a high near 92.
Sunday Night
Partly cloudy, with a low around 78.
Monday
Mostly sunny, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carolina PR
 18.41°N 65.98°W (Elev. 13 ft)
Last Update:
4:10 am AST Jul 15, 2025
Forecast Valid:
4am AST Jul 15, 2025-6pm AST Jul 21, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation