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

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Mostly Cloudy

82°F

28°C

Humidity 79%
Wind Speed S 5 mph
Barometer 30.07 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 11 Oct 8:56 am AST
Extended Forecast for

Rio Lajas PR

  • Today

    Today: Scattered showers before noon, then scattered showers and thunderstorms between noon and 3pm, then scattered showers after 3pm. Partly sunny, with a high near 87. East wind 8 to 15 mph. Chance of precipitation is 50%.

    High: 87 °F

    Scattered
    Showers

  • Tonight

    Tonight: Isolated showers. Mostly clear, with a low around 75. Southeast wind around 7 mph. Chance of precipitation is 20%.

    Low: 75 °F

    Isolated
    Showers

  • Columbus Day

    Columbus Day: Scattered showers, then showers likely and possibly a thunderstorm after 3pm. Increasing clouds, with a high near 88. Heat index values as high as 102. East wind 7 to 13 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 88 °F

    Isolated
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Isolated showers. Partly cloudy, with a low around 76. East wind 3 to 8 mph. Chance of precipitation is 20%.

    Low: 76 °F

    Isolated
    Showers

  • Tuesday

    Tuesday: Isolated showers, then showers and possibly a thunderstorm after noon. High near 87. East northeast wind 5 to 10 mph becoming light in the afternoon. Chance of precipitation is 80%.

    High: 87 °F

    Isolated
    Showers then
    Showers

  • Tuesday Night

    Tuesday Night: Isolated showers. Partly cloudy, with a low around 76. East southeast wind around 8 mph. Chance of precipitation is 10%.

    Low: 76 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly after noon. Partly sunny, with a high near 88. East northeast wind 5 to 11 mph. Chance of precipitation is 60%.

    High: 88 °F

    Mostly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 77. East southeast wind 3 to 6 mph.

    Low: 77 °F

    Partly Cloudy

  • Thursday

    Thursday: Scattered showers, mainly after noon. Mostly sunny, with a high near 88. Light east wind becoming east northeast 8 to 13 mph in the morning. Chance of precipitation is 50%.

    High: 88 °F

    Mostly Sunny
    then
    Scattered
    Showers

Detailed Forecast

Today
Scattered showers before noon, then scattered showers and thunderstorms between noon and 3pm, then scattered showers after 3pm. Partly sunny, with a high near 87. East wind 8 to 15 mph. Chance of precipitation is 50%.
Tonight
Isolated showers. Mostly clear, with a low around 75. Southeast wind around 7 mph. Chance of precipitation is 20%.
Columbus Day
Scattered showers, then showers likely and possibly a thunderstorm after 3pm. Increasing clouds, with a high near 88. Heat index values as high as 102. East wind 7 to 13 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Isolated showers. Partly cloudy, with a low around 76. East wind 3 to 8 mph. Chance of precipitation is 20%.
Tuesday
Isolated showers, then showers and possibly a thunderstorm after noon. High near 87. East northeast wind 5 to 10 mph becoming light in the afternoon. Chance of precipitation is 80%.
Tuesday Night
Isolated showers. Partly cloudy, with a low around 76. East southeast wind around 8 mph. Chance of precipitation is 10%.
Wednesday
Showers likely, mainly after noon. Partly sunny, with a high near 88. East northeast wind 5 to 11 mph. Chance of precipitation is 60%.
Wednesday Night
Partly cloudy, with a low around 77. East southeast wind 3 to 6 mph.
Thursday
Scattered showers, mainly after noon. Mostly sunny, with a high near 88. Light east wind becoming east northeast 8 to 13 mph in the morning. Chance of precipitation is 50%.
Thursday Night
Partly cloudy, with a low around 77.
Friday
Mostly sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 75.
Saturday
Scattered showers. Partly sunny, with a high near 88. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rio Lajas PR
 18.4°N 66.27°W (Elev. 131 ft)
Last Update:
6:55 am AST Oct 11, 2026
Forecast Valid:
9am AST Oct 11, 2026-6pm AST Oct 17, 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