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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

82°F

28°C

Humidity 79%
Wind Speed Vrbl 3 mph
Barometer 30.02 in (1016.6 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 4 Oct 7:56 am AST
Extended Forecast for

2 Miles NNE San Juan 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, with thunderstorms also possible after 3pm. Partly sunny, with a high near 91. Heat index values as high as 105. East wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

    High: 91 °F

    Scattered
    Showers

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before midnight, then scattered showers. Mostly cloudy, with a low around 78. Southeast wind 5 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 78 °F

    Showers
    Likely

  • Monday

    Monday: Scattered showers, mainly between 9am and noon. Mostly sunny, with a high near 91. Heat index values as high as 106. East wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 91 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Isolated showers. Partly cloudy, with a low around 79. East southeast wind 6 to 8 mph. Chance of precipitation is 10%.

    Low: 79 °F

    Isolated
    Showers

  • Tuesday

    Tuesday: Scattered showers, mainly after noon. Mostly sunny, with a high near 91. East northeast wind 6 to 15 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 80. East wind 6 to 9 mph. Chance of precipitation is 30%.

    Low: 80 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers, mainly after noon. Mostly sunny, with a high near 89. East northeast wind 7 to 14 mph. Chance of precipitation is 40%.

    High: 89 °F

    Mostly Sunny
    then
    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Mostly cloudy, with a low around 78. Southeast wind 7 to 9 mph. Chance of precipitation is 40%.

    Low: 78 °F

    Scattered
    Showers

  • Thursday

    Thursday: Showers likely, mainly after noon. Mostly cloudy, with a high near 91. East wind 8 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 91 °F

    Showers
    Likely

Detailed Forecast

Today
Scattered showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 91. Heat index values as high as 105. East wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers likely and possibly a thunderstorm before midnight, then scattered showers. Mostly cloudy, with a low around 78. Southeast wind 5 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Scattered showers, mainly between 9am and noon. Mostly sunny, with a high near 91. Heat index values as high as 106. East wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Monday Night
Isolated showers. Partly cloudy, with a low around 79. East southeast wind 6 to 8 mph. Chance of precipitation is 10%.
Tuesday
Scattered showers, mainly after noon. Mostly sunny, with a high near 91. East northeast wind 6 to 15 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 80. East wind 6 to 9 mph. Chance of precipitation is 30%.
Wednesday
Scattered showers, mainly after noon. Mostly sunny, with a high near 89. East northeast wind 7 to 14 mph. Chance of precipitation is 40%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 78. Southeast wind 7 to 9 mph. Chance of precipitation is 40%.
Thursday
Showers likely, mainly after noon. Mostly cloudy, with a high near 91. East wind 8 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Thursday Night
Scattered showers. Partly cloudy, with a low around 79. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 91.
Friday Night
Partly cloudy, with a low around 78.
Saturday
Mostly sunny, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE San Juan PR
 18.44°N 66.05°W (Elev. 30 ft)
Last Update:
3:54 am AST Oct 4, 2026
Forecast Valid:
8am AST Oct 4, 2026-6pm AST Oct 10, 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