National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
News Headlines
Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Partly Cloudy

80°F

27°C

Humidity 82%
Wind Speed SE 3 mph
Barometer 29.99 in (1015.5 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 11 Oct 11:56 pm AST
Extended Forecast for

San Lorenzo PR

  • Overnight

    Overnight: Isolated showers. Partly cloudy, with a low around 73. East wind 3 to 5 mph. Chance of precipitation is 20%.

    Low: 73 °F

    Isolated
    Showers

  • Columbus Day

    Columbus Day: Isolated showers before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then scattered showers after 3pm. Partly sunny, with a high near 87. East southeast wind 6 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 87 °F

    Isolated
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Scattered showers, mainly after midnight. Partly cloudy, with a low around 74. Light and variable wind. Chance of precipitation is 30%.

    Low: 74 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers, then showers likely and possibly a thunderstorm after noon. Increasing clouds, with a high near 87. Calm wind becoming east 5 to 9 mph in the morning. Chance of precipitation is 70%.

    High: 87 °F

    Scattered
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Scattered showers. Mostly cloudy, with a low around 74. Light east wind. Chance of precipitation is 40%.

    Low: 74 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers. Partly sunny, with a high near 88. Light east northeast wind becoming east 6 to 11 mph in the morning. Chance of precipitation is 40%.

    High: 88 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Mostly cloudy, with a low around 74. Light east northeast wind. Chance of precipitation is 40%.

    Low: 74 °F

    Scattered
    Showers

  • Thursday

    Thursday: Showers likely, mainly after noon. Partly sunny, with a high near 88. Calm wind becoming east 5 to 9 mph in the morning. Chance of precipitation is 60%.

    High: 88 °F

    Scattered
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 74. Light northeast wind.

    Low: 74 °F

    Partly Cloudy

Detailed Forecast

Overnight
Isolated showers. Partly cloudy, with a low around 73. East wind 3 to 5 mph. Chance of precipitation is 20%.
Columbus Day
Isolated showers before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then scattered showers after 3pm. Partly sunny, with a high near 87. East southeast wind 6 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Scattered showers, mainly after midnight. Partly cloudy, with a low around 74. Light and variable wind. Chance of precipitation is 30%.
Tuesday
Scattered showers, then showers likely and possibly a thunderstorm after noon. Increasing clouds, with a high near 87. Calm wind becoming east 5 to 9 mph in the morning. Chance of precipitation is 70%.
Tuesday Night
Scattered showers. Mostly cloudy, with a low around 74. Light east wind. Chance of precipitation is 40%.
Wednesday
Scattered showers. Partly sunny, with a high near 88. Light east northeast wind becoming east 6 to 11 mph in the morning. Chance of precipitation is 40%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 74. Light east northeast wind. Chance of precipitation is 40%.
Thursday
Showers likely, mainly after noon. Partly sunny, with a high near 88. Calm wind becoming east 5 to 9 mph in the morning. Chance of precipitation is 60%.
Thursday Night
Partly cloudy, with a low around 74. Light northeast wind.
Friday
Mostly sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 74.
Saturday
Scattered showers. Partly sunny, with a high near 88. Chance of precipitation is 50%.
Saturday Night
Partly cloudy, with a low around 74.
Sunday
Scattered showers. Mostly sunny, with a high near 88. Chance of precipitation is 50%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Lorenzo PR
 18.19°N 65.97°W (Elev. 305 ft)
Last Update:
4:30 pm AST Oct 11, 2026
Forecast Valid:
12am AST Oct 12, 2026-6pm AST Oct 18, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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