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

82°F

28°C

Humidity 79%
Wind Speed Calm
Barometer 29.99 in (1015.5 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 20 Sep 11:56 pm AST
Extended Forecast for

3 Miles E Mucarabones PR

  • Overnight

    Overnight: Isolated showers. Partly cloudy, with a low around 77. Southeast wind 3 to 5 mph. Chance of precipitation is 20%.

    Low: 77 °F

    Isolated
    Showers

  • Monday

    Monday: Scattered showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 92. Heat index values as high as 107. East southeast wind 6 to 13 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

    High: 92 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Scattered showers and thunderstorms before midnight, then scattered showers between midnight and 3am. Partly cloudy, with a low around 77. Southeast wind 5 to 7 mph. Chance of precipitation is 40%.

    Low: 77 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 92. Heat index values as high as 107. East wind 6 to 14 mph. Chance of precipitation is 60%.

    High: 92 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Scattered showers, mainly before midnight. Partly cloudy, with a low around 78. Southeast wind 6 to 8 mph. Chance of precipitation is 40%.

    Low: 78 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers. Mostly sunny, with a high near 91. East wind 7 to 16 mph. Chance of precipitation is 30%.

    High: 91 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 77. Southeast wind 3 to 8 mph.

    Low: 77 °F

    Partly Cloudy

  • Thursday

    Thursday: Scattered showers, mainly after noon. Mostly sunny, with a high near 92. East wind 7 to 16 mph. Chance of precipitation is 40%.

    High: 92 °F

    Mostly Sunny
    then
    Scattered
    Showers

  • Thursday Night

    Thursday Night: Scattered showers. Partly cloudy, with a low around 78. Southeast wind 6 to 8 mph. Chance of precipitation is 30%.

    Low: 78 °F

    Scattered
    Showers

Detailed Forecast

Overnight
Isolated showers. Partly cloudy, with a low around 77. Southeast wind 3 to 5 mph. Chance of precipitation is 20%.
Monday
Scattered showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 92. Heat index values as high as 107. East southeast wind 6 to 13 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Scattered showers and thunderstorms before midnight, then scattered showers between midnight and 3am. Partly cloudy, with a low around 77. Southeast wind 5 to 7 mph. Chance of precipitation is 40%.
Tuesday
Scattered showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 92. Heat index values as high as 107. East wind 6 to 14 mph. Chance of precipitation is 60%.
Tuesday Night
Scattered showers, mainly before midnight. Partly cloudy, with a low around 78. Southeast wind 6 to 8 mph. Chance of precipitation is 40%.
Wednesday
Scattered showers. Mostly sunny, with a high near 91. East wind 7 to 16 mph. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 77. Southeast wind 3 to 8 mph.
Thursday
Scattered showers, mainly after noon. Mostly sunny, with a high near 92. East wind 7 to 16 mph. Chance of precipitation is 40%.
Thursday Night
Scattered showers. Partly cloudy, with a low around 78. Southeast wind 6 to 8 mph. Chance of precipitation is 30%.
Friday
Scattered showers, mainly after noon. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
Friday Night
Mostly clear, with a low around 78.
Saturday
Sunny, with a high near 92.
Saturday Night
Clear, with a low around 78.
Sunday
Mostly sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Mucarabones PR
 18.39°N 66.17°W (Elev. 75 ft)
Last Update:
12:35 am AST Sep 21, 2026
Forecast Valid:
1am AST Sep 21, 2026-6pm AST Sep 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation