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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.

Mostly Cloudy

86°F

30°C

Humidity 75%
Wind Speed E 9 mph
Barometer 30.04 in (1017.2 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 10 Nov 12:56 pm AST
Extended Forecast for

Guaynabo PR

  • This Afternoon

    This Afternoon: Scattered showers and thunderstorms. Partly sunny, with a high near 87. East wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 87 °F

    Scattered
    Showers

  • Tonight

    Tonight: Isolated showers before 9pm. Mostly clear, with a low around 78. Southeast wind around 6 mph. Chance of precipitation is 20%.

    Low: 78 °F

    Isolated
    Showers then
    Mostly Clear

  • Veterans Day

    Veterans Day: Scattered showers, mainly after noon. Mostly sunny, with a high near 89. East southeast wind 6 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 89 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 78. Southeast wind 5 to 7 mph.

    Low: 78 °F

    Mostly Clear

  • Thursday

    Thursday: Isolated showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 90. Southeast wind 6 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 90 °F

    Isolated
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Isolated showers. Partly cloudy, with a low around 80. Southeast wind 5 to 7 mph. Chance of precipitation is 10%.

    Low: 80 °F

    Isolated
    Showers

  • Friday

    Friday: Showers likely, mainly after noon. Partly sunny, with a high near 90. South southeast wind 7 to 17 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    High: 90 °F

    Mostly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: Mostly clear, with a low around 80. South southeast wind around 8 mph.

    Low: 80 °F

    Mostly Clear

  • Saturday

    Saturday: Scattered showers, mainly after noon. Mostly sunny, with a high near 90. South southeast wind 8 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 90 °F

    Mostly Sunny
    then
    Scattered
    Showers

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Partly sunny, with a high near 87. East wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
Isolated showers before 9pm. Mostly clear, with a low around 78. Southeast wind around 6 mph. Chance of precipitation is 20%.
Veterans Day
Scattered showers, mainly after noon. Mostly sunny, with a high near 89. East southeast wind 6 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Wednesday Night
Mostly clear, with a low around 78. Southeast wind 5 to 7 mph.
Thursday
Isolated showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 90. Southeast wind 6 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Thursday Night
Isolated showers. Partly cloudy, with a low around 80. Southeast wind 5 to 7 mph. Chance of precipitation is 10%.
Friday
Showers likely, mainly after noon. Partly sunny, with a high near 90. South southeast wind 7 to 17 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Friday Night
Mostly clear, with a low around 80. South southeast wind around 8 mph.
Saturday
Scattered showers, mainly after noon. Mostly sunny, with a high near 90. South southeast wind 8 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 79.
Sunday
Scattered showers. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Sunday Night
Clear, with a low around 78.
Monday
Sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Guaynabo PR
 18.4°N 66.11°W (Elev. 56 ft)
Last Update:
7:59 am AST Nov 10, 2026
Forecast Valid:
1pm AST Nov 10, 2026-6pm AST Nov 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation