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Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Heavy Rain Fog/Mist

75°F

24°C

Humidity 89%
Wind Speed W 3 mph
Barometer 29.98 in
Dewpoint 72°F (22°C)
Visibility 1.50 mi
Last update 4 Oct 1:56 pm AST
Extended Forecast for

San Lorenzo PR

  • This Afternoon

    This Afternoon: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 89. East southeast wind around 10 mph. Chance of precipitation is 70%.

    High: 89 °F

    Showers
    Likely

  • Tonight

    Tonight: Scattered showers. Mostly cloudy, with a low around 74. East southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 74 °F

    Scattered
    Showers

  • Monday

    Monday: Scattered showers, with thunderstorms also possible after noon. Partly sunny, with a high near 90. Heat index values as high as 103. East southeast wind 5 to 11 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

    High: 90 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 9pm, then scattered showers. Mostly cloudy, with a low around 73. East southeast wind 3 to 5 mph. Chance of precipitation is 60%.

    Low: 73 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Scattered showers, mainly after noon. Mostly sunny, with a high near 90. East wind 6 to 10 mph. Chance of precipitation is 40%.

    High: 90 °F

    Isolated
    Showers then
    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers, mainly before midnight. Partly cloudy, with a low around 74. Light east wind. Chance of precipitation is 30%.

    Low: 74 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers. Partly sunny, with a high near 87. Southeast wind 7 to 10 mph. Chance of precipitation is 50%.

    High: 87 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Mostly cloudy, with a low around 74. East southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.

    Low: 74 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers. Mostly cloudy, with a high near 89. East southeast wind 6 to 11 mph. Chance of precipitation is 50%.

    High: 89 °F

    Scattered
    Showers

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 89. East southeast wind around 10 mph. Chance of precipitation is 70%.
Tonight
Scattered showers. Mostly cloudy, with a low around 74. East southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Monday
Scattered showers, with thunderstorms also possible after noon. Partly sunny, with a high near 90. Heat index values as high as 103. East southeast wind 5 to 11 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers likely and possibly a thunderstorm before 9pm, then scattered showers. Mostly cloudy, with a low around 73. East southeast wind 3 to 5 mph. Chance of precipitation is 60%.
Tuesday
Scattered showers, mainly after noon. Mostly sunny, with a high near 90. East wind 6 to 10 mph. Chance of precipitation is 40%.
Tuesday Night
Scattered showers, mainly before midnight. Partly cloudy, with a low around 74. Light east wind. Chance of precipitation is 30%.
Wednesday
Scattered showers. Partly sunny, with a high near 87. Southeast wind 7 to 10 mph. Chance of precipitation is 50%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 74. East southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Thursday
Scattered showers. Mostly cloudy, with a high near 89. East southeast wind 6 to 11 mph. Chance of precipitation is 50%.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 74. Chance of precipitation is 40%.
Friday
Scattered showers. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 73.
Saturday
Mostly sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Lorenzo PR
 18.19°N 65.97°W (Elev. 305 ft)
Last Update:
1:27 pm AST Oct 4, 2026
Forecast Valid:
2pm AST Oct 4, 2026-6pm AST Oct 10, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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