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

28°C

82°F

Humidity 89%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 26°C (79°F)
Visibility 16 km
Heat Index33°C (91°F)
Last update 31 May 10:56 pm AST
Extended Forecast for

Guaynabo PR

  • Tonight

    Tonight: Scattered showers, mainly before midnight. Widespread haze after midnight. Partly cloudy, with a low around 26. East southeast wind around 13 km/h. Chance of precipitation is 50%.

    Low: 26 °C

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers, with thunderstorms also possible after noon. Partly sunny, with a high near 32. Heat index values as high as 40. East southeast wind 14 to 23 km/h. Chance of precipitation is 50%. New rainfall amounts between 1 and 2 cm possible.

    High: 32 °C

    Scattered
    Showers

  • Saturday Night

    Saturday Night: Scattered showers. Partly cloudy, with a low around 27. East wind around 14 km/h. Chance of precipitation is 30%.

    Low: 27 °C

    Scattered
    Showers

  • Sunday

    Sunday: Scattered showers and thunderstorms after noon. Widespread haze before noon. Mostly sunny, with a high near 31. East wind 18 to 23 km/h. Chance of precipitation is 40%.

    High: 31 °C

    Haze then
    Scattered
    Showers

  • Sunday Night

    Sunday Night: Isolated showers. Partly cloudy, with a low around 26. East wind 8 to 11 km/h. Chance of precipitation is 10%.

    Low: 26 °C

    Isolated
    Showers

  • Monday

    Monday: Isolated showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 31. East southeast wind 13 to 21 km/h. Chance of precipitation is 60%.

    High: 31 °C

    Isolated
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Scattered showers. Partly cloudy, with a low around 26. Southeast wind around 11 km/h. Chance of precipitation is 30%.

    Low: 26 °C

    Scattered
    Showers

  • Tuesday

    Tuesday: Showers likely, mainly after noon. Partly sunny, with a high near 32. South southeast wind 14 to 24 km/h, with gusts as high as 32 km/h. Chance of precipitation is 60%.

    High: 32 °C

    Scattered
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Scattered showers. Mostly cloudy, with a low around 27. Southeast wind 14 to 16 km/h. Chance of precipitation is 40%.

    Low: 27 °C

    Scattered
    Showers

Detailed Forecast

Tonight
Scattered showers, mainly before midnight. Widespread haze after midnight. Partly cloudy, with a low around 26. East southeast wind around 13 km/h. Chance of precipitation is 50%.
Saturday
Scattered showers, with thunderstorms also possible after noon. Partly sunny, with a high near 32. Heat index values as high as 40. East southeast wind 14 to 23 km/h. Chance of precipitation is 50%. New rainfall amounts between 1 and 2 cm possible.
Saturday Night
Scattered showers. Partly cloudy, with a low around 27. East wind around 14 km/h. Chance of precipitation is 30%.
Sunday
Scattered showers and thunderstorms after noon. Widespread haze before noon. Mostly sunny, with a high near 31. East wind 18 to 23 km/h. Chance of precipitation is 40%.
Sunday Night
Isolated showers. Partly cloudy, with a low around 26. East wind 8 to 11 km/h. Chance of precipitation is 10%.
Monday
Isolated showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 31. East southeast wind 13 to 21 km/h. Chance of precipitation is 60%.
Monday Night
Scattered showers. Partly cloudy, with a low around 26. Southeast wind around 11 km/h. Chance of precipitation is 30%.
Tuesday
Showers likely, mainly after noon. Partly sunny, with a high near 32. South southeast wind 14 to 24 km/h, with gusts as high as 32 km/h. Chance of precipitation is 60%.
Tuesday Night
Scattered showers. Mostly cloudy, with a low around 27. Southeast wind 14 to 16 km/h. Chance of precipitation is 40%.
Wednesday
Showers, mainly after noon. High near 32. Chance of precipitation is 80%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 26. Chance of precipitation is 50%.
Thursday
Showers likely. Mostly cloudy, with a high near 32. Chance of precipitation is 70%.
Thursday Night
Scattered showers. Partly cloudy, with a low around 27. Chance of precipitation is 30%.
Friday
Scattered showers. Mostly sunny, with a high near 33. Chance of precipitation is 40%.
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Guaynabo PR
 18.4°N 66.1°W (Elev. 82 m)
Last Update:
4:21 pm AST May 31, 2024
Forecast Valid:
11pm AST May 31, 2024-6pm AST Jun 7, 2024
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation