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

Hazardous Weather Conditions

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Fair

80°F

27°C

Humidity 85%
Wind Speed Calm
Barometer 29.95 in (1014.0 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 19 Sep 4:56 am AST
Extended Forecast for

3 Miles NNE Fajardo PR

Heat Advisory September 19, 10:00am until September 19, 05:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Scattered showers. Partly cloudy, with a low around 81. East wind around 8 mph. Chance of precipitation is 30%.

    Low: 81 °F

    Scattered
    Showers

  • Saturday

    Saturday: Isolated showers. Mostly sunny, with a high near 87. East wind 7 to 10 mph. Chance of precipitation is 20%.

    High: 87 °F

    Isolated
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly after 3am. Mostly cloudy, with a low around 81. East wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 81 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely, mainly before noon. Partly sunny, with a high near 87. East southeast wind 8 to 10 mph. Chance of precipitation is 60%.

    High: 87 °F

    Showers
    Likely then
    Scattered
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 81. East southeast wind around 9 mph. Chance of precipitation is 60%.

    Low: 81 °F

    Showers
    Likely

  • Monday

    Monday: Scattered showers. Partly sunny, with a high near 88. East southeast wind 8 to 13 mph. Chance of precipitation is 40%.

    High: 88 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Scattered showers, mainly before midnight. Mostly cloudy, with a low around 82. East southeast wind around 10 mph. Chance of precipitation is 50%.

    Low: 82 °F

    Scattered
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Scattered showers. Mostly sunny, with a high near 88. East wind around 11 mph. Chance of precipitation is 30%.

    High: 88 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers. Partly cloudy, with a low around 81. East wind 11 to 13 mph. Chance of precipitation is 30%.

    Low: 81 °F

    Scattered
    Showers

Detailed Forecast

Overnight
Scattered showers. Partly cloudy, with a low around 81. East wind around 8 mph. Chance of precipitation is 30%.
Saturday
Isolated showers. Mostly sunny, with a high near 87. East wind 7 to 10 mph. Chance of precipitation is 20%.
Saturday Night
Showers likely, mainly after 3am. Mostly cloudy, with a low around 81. East wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Showers likely, mainly before noon. Partly sunny, with a high near 87. East southeast wind 8 to 10 mph. Chance of precipitation is 60%.
Sunday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 81. East southeast wind around 9 mph. Chance of precipitation is 60%.
Monday
Scattered showers. Partly sunny, with a high near 88. East southeast wind 8 to 13 mph. Chance of precipitation is 40%.
Monday Night
Scattered showers, mainly before midnight. Mostly cloudy, with a low around 82. East southeast wind around 10 mph. Chance of precipitation is 50%.
Tuesday
Scattered showers. Mostly sunny, with a high near 88. East wind around 11 mph. Chance of precipitation is 30%.
Tuesday Night
Scattered showers. Partly cloudy, with a low around 81. East wind 11 to 13 mph. Chance of precipitation is 30%.
Wednesday
Scattered showers. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 81. Chance of precipitation is 40%.
Thursday
Scattered showers. Partly sunny, with a high near 88. Chance of precipitation is 40%.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 82. Chance of precipitation is 40%.
Friday
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:
3 Miles NNE Fajardo PR
 18.37°N 65.64°W (Elev. 33 ft)
Last Update:
4:49 am AST Sep 19, 2026
Forecast Valid:
5am AST Sep 19, 2026-6pm AST Sep 25, 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