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

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

A Few Clouds

81°F

27°C

Humidity 82%
Wind Speed Calm
Barometer 29.99 in (1015.3 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 14 Sep 1:56 am AST
Extended Forecast for

Caguas PR

  • Overnight

    Overnight: Scattered showers, mainly after 3am. Partly cloudy, with a low around 77. Light east wind. Chance of precipitation is 30%.

    Low: 77 °F

    Scattered
    Showers

  • Monday

    Monday: Scattered showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 90. East wind 7 to 11 mph. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.

    High: 90 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Scattered showers, mainly after 3am. Mostly clear, with a low around 77. East wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 77 °F

    Clear then
    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers, mainly after 9am. Partly sunny, with a high near 91. Heat index values as high as 103. East wind 5 to 13 mph. Chance of precipitation is 50%.

    High: 91 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Isolated showers after midnight. Mostly clear, with a low around 77. East wind 3 to 5 mph. Chance of precipitation is 20%.

    Low: 77 °F

    Mostly Clear
    then Isolated
    Showers

  • Wednesday

    Wednesday: Isolated showers. Mostly sunny, with a high near 92. East wind 8 to 11 mph. Chance of precipitation is 20%.

    High: 92 °F

    Isolated
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Mostly cloudy, with a low around 78. East wind 3 to 5 mph. Chance of precipitation is 40%.

    Low: 78 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers. Mostly cloudy, with a high near 91. East southeast wind 8 to 13 mph. Chance of precipitation is 50%.

    High: 91 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Showers likely. Mostly cloudy, with a low around 78. East southeast wind around 5 mph. Chance of precipitation is 60%.

    Low: 78 °F

    Showers
    Likely

Detailed Forecast

Overnight
Scattered showers, mainly after 3am. Partly cloudy, with a low around 77. Light east wind. Chance of precipitation is 30%.
Monday
Scattered showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 90. East wind 7 to 11 mph. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.
Monday Night
Scattered showers, mainly after 3am. Mostly clear, with a low around 77. East wind 3 to 5 mph. Chance of precipitation is 30%.
Tuesday
Scattered showers, mainly after 9am. Partly sunny, with a high near 91. Heat index values as high as 103. East wind 5 to 13 mph. Chance of precipitation is 50%.
Tuesday Night
Isolated showers after midnight. Mostly clear, with a low around 77. East wind 3 to 5 mph. Chance of precipitation is 20%.
Wednesday
Isolated showers. Mostly sunny, with a high near 92. East wind 8 to 11 mph. Chance of precipitation is 20%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 78. East wind 3 to 5 mph. Chance of precipitation is 40%.
Thursday
Scattered showers. Mostly cloudy, with a high near 91. East southeast wind 8 to 13 mph. Chance of precipitation is 50%.
Thursday Night
Showers likely. Mostly cloudy, with a low around 78. East southeast wind around 5 mph. Chance of precipitation is 60%.
Friday
Scattered showers, mainly after noon. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 77.
Saturday
Scattered showers. Partly sunny, with a high near 92. Chance of precipitation is 50%.
Saturday Night
Scattered showers. Partly cloudy, with a low around 77. Chance of precipitation is 30%.
Sunday
Scattered showers. Mostly sunny, with a high near 92. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Caguas PR
 18.23°N 66.04°W (Elev. 230 ft)
Last Update:
1:57 am AST Sep 14, 2026
Forecast Valid:
2am AST Sep 14, 2026-6pm AST Sep 20, 2026
 
Forecast Discussion
 
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Additional Resources

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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