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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

84°F

29°C

Humidity 70%
Wind Speed E 3 mph
Barometer 30.03 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 4 Oct 8:56 am AST
Extended Forecast for

Toa Baja 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, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 92. Heat index values as high as 111. East wind 6 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 92 °F

    Isolated
    Showers then
    Showers
    Likely

  • Tonight

    Tonight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 76. East southeast wind 5 to 9 mph becoming light southeast after midnight. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 76 °F

    Scattered
    Showers

  • Monday

    Monday: Scattered showers, mainly between noon and 3pm. Mostly sunny, with a high near 93. Heat index values as high as 114. East wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 30%.

    High: 93 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Isolated showers before midnight. Mostly clear, with a low around 77. East southeast wind 5 to 9 mph. Chance of precipitation is 10%.

    Low: 77 °F

    Isolated
    Showers then
    Mostly Clear

  • Tuesday

    Tuesday: Isolated showers after noon. Sunny, with a high near 92. East northeast wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Chance of precipitation is 20%.

    High: 92 °F

    Sunny then
    Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Isolated showers. Partly cloudy, with a low around 78. East wind 5 to 9 mph becoming light east southeast after midnight. Chance of precipitation is 20%.

    Low: 78 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Scattered showers, mainly after noon. Mostly sunny, with a high near 90. East northeast wind 6 to 16 mph. Chance of precipitation is 40%.

    High: 90 °F

    Mostly Sunny
    then
    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Partly cloudy, with a low around 76. Southeast wind 6 to 9 mph. Chance of precipitation is 30%.

    Low: 76 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers. Partly sunny, with a high near 92. East wind 7 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 92 °F

    Scattered
    Showers

Detailed Forecast

Today
Scattered showers, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 92. Heat index values as high as 111. East wind 6 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Tonight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 76. East southeast wind 5 to 9 mph becoming light southeast after midnight. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Scattered showers, mainly between noon and 3pm. Mostly sunny, with a high near 93. Heat index values as high as 114. East wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 30%.
Monday Night
Isolated showers before midnight. Mostly clear, with a low around 77. East southeast wind 5 to 9 mph. Chance of precipitation is 10%.
Tuesday
Isolated showers after noon. Sunny, with a high near 92. East northeast wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Isolated showers. Partly cloudy, with a low around 78. East wind 5 to 9 mph becoming light east southeast after midnight. Chance of precipitation is 20%.
Wednesday
Scattered showers, mainly after noon. Mostly sunny, with a high near 90. East northeast wind 6 to 16 mph. Chance of precipitation is 40%.
Wednesday Night
Scattered showers. Partly cloudy, with a low around 76. Southeast wind 6 to 9 mph. Chance of precipitation is 30%.
Thursday
Scattered showers. Partly sunny, with a high near 92. East wind 7 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Thursday Night
Scattered showers. Partly cloudy, with a low around 77. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 92.
Friday Night
Partly cloudy, with a low around 76.
Saturday
Mostly sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Toa Baja PR
 18.45°N 66.26°W (Elev. 13 ft)
Last Update:
3:54 am AST Oct 4, 2026
Forecast Valid:
9am AST Oct 4, 2026-6pm AST Oct 10, 2026
 
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