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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 and Breezy

88°F

31°C

Humidity 66%
Wind Speed E 22 G 32 mph
Barometer 30.07 in
Dewpoint 75°F (24°C)
Visibility 8.00 mi
Heat Index98°F (37°C)
Last update 15 Aug 8:56 am AST
Extended Forecast for

H. Rivera Colon PR

Heat Advisory August 15, 10:00am until August 15, 05:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Isolated showers. Widespread haze. Mostly sunny, with a high near 90. Heat index values as high as 103. East northeast wind 15 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 90 °F

    Isolated
    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before midnight, then showers likely and possibly a thunderstorm after 3am. Mostly cloudy, with a low around 76. East wind 8 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 76 °F

    Showers
    Likely

  • Sunday

    Sunday: Scattered showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 89. Heat index values as high as 102. East wind 9 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 89 °F

    Scattered
    Showers

  • Sunday Night

    Sunday Night: Isolated showers. Mostly clear, with a low around 76. East wind 5 to 8 mph. Chance of precipitation is 10%.

    Low: 76 °F

    Isolated
    Showers

  • Monday

    Monday: Scattered showers after noon. Mostly sunny, with a high near 90. East northeast wind 10 to 14 mph. Chance of precipitation is 30%.

    High: 90 °F

    Sunny then
    Scattered
    Showers

  • Monday Night

    Monday Night: Isolated showers. Partly cloudy, with a low around 75. East southeast wind 3 to 8 mph. Chance of precipitation is 10%.

    Low: 75 °F

    Isolated
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 90. East northeast wind 6 to 14 mph.

    High: 90 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. East southeast wind 5 to 7 mph.

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: Scattered showers, mainly after noon. Mostly sunny, with a high near 90. East northeast wind 7 to 15 mph. Chance of precipitation is 30%.

    High: 90 °F

    Mostly Sunny
    then
    Scattered
    Showers

Detailed Forecast

Today
Isolated showers. Widespread haze. Mostly sunny, with a high near 90. Heat index values as high as 103. East northeast wind 15 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Tonight
Showers and thunderstorms likely, mainly before midnight, then showers likely and possibly a thunderstorm after 3am. Mostly cloudy, with a low around 76. East wind 8 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Scattered showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 89. Heat index values as high as 102. East wind 9 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Sunday Night
Isolated showers. Mostly clear, with a low around 76. East wind 5 to 8 mph. Chance of precipitation is 10%.
Monday
Scattered showers after noon. Mostly sunny, with a high near 90. East northeast wind 10 to 14 mph. Chance of precipitation is 30%.
Monday Night
Isolated showers. Partly cloudy, with a low around 75. East southeast wind 3 to 8 mph. Chance of precipitation is 10%.
Tuesday
Mostly sunny, with a high near 90. East northeast wind 6 to 14 mph.
Tuesday Night
Mostly clear, with a low around 76. East southeast wind 5 to 7 mph.
Wednesday
Scattered showers, mainly after noon. Mostly sunny, with a high near 90. East northeast wind 7 to 15 mph. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 76.
Thursday
Scattered showers. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 76. Chance of precipitation is 50%.
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:
H. Rivera Colon PR
 18.35°N 66.27°W (Elev. 453 ft)
Last Update:
4:06 am AST Aug 15, 2026
Forecast Valid:
9am AST Aug 15, 2026-6pm AST Aug 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation