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Hazardous Weather Conditions

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 84%
Wind Speed Calm
Barometer 29.86 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 21 Sep 4:56 am AST
Extended Forecast for

San Juan PR

Excessive Heat Warning September 21, 06:00am until September 21, 05:00pm
Click here for hazard details and duration
Excessive Heat Warning

  • Overnight

    Overnight: Isolated showers. Partly cloudy, with a low around 81. Light south wind. Chance of precipitation is 10%.

    Low: 81 °F

    Isolated
    Showers

  • Saturday

    Saturday: Scattered showers, mainly after noon. Mostly sunny, with a high near 93. Heat index values as high as 110. Light and variable wind becoming northeast 5 to 8 mph in the afternoon. Chance of precipitation is 40%.

    High: 93 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: Isolated showers. Partly cloudy, with a low around 79. Calm wind. Chance of precipitation is 20%.

    Low: 79 °F

    Isolated
    Showers

  • Sunday

    Sunday: Isolated showers before noon, then scattered showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly sunny, with a high near 90. Heat index values as high as 105. Light and variable wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 60%.

    High: 90 °F

    Isolated
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Isolated showers. Partly cloudy, with a low around 80. Calm wind becoming south around 5 mph. Chance of precipitation is 20%.

    Low: 80 °F

    Isolated
    Showers

  • Monday

    Monday: Isolated showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 90. Calm wind becoming east northeast 5 to 8 mph in the afternoon. Chance of precipitation is 60%.

    High: 90 °F

    Isolated
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 79. South southeast wind 3 to 5 mph.

    Low: 79 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Scattered showers, mainly after noon. Mostly sunny, with a high near 89. Light and variable wind becoming east northeast 5 to 10 mph in the morning. Chance of precipitation is 40%.

    High: 89 °F

    Mostly Sunny
    then
    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 79. Southeast wind 3 to 7 mph.

    Low: 79 °F

    Partly Cloudy

Detailed Forecast

Overnight
Isolated showers. Partly cloudy, with a low around 81. Light south wind. Chance of precipitation is 10%.
Saturday
Scattered showers, mainly after noon. Mostly sunny, with a high near 93. Heat index values as high as 110. Light and variable wind becoming northeast 5 to 8 mph in the afternoon. Chance of precipitation is 40%.
Saturday Night
Isolated showers. Partly cloudy, with a low around 79. Calm wind. Chance of precipitation is 20%.
Sunday
Isolated showers before noon, then scattered showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly sunny, with a high near 90. Heat index values as high as 105. Light and variable wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 60%.
Sunday Night
Isolated showers. Partly cloudy, with a low around 80. Calm wind becoming south around 5 mph. Chance of precipitation is 20%.
Monday
Isolated showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 90. Calm wind becoming east northeast 5 to 8 mph in the afternoon. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 79. South southeast wind 3 to 5 mph.
Tuesday
Scattered showers, mainly after noon. Mostly sunny, with a high near 89. Light and variable wind becoming east northeast 5 to 10 mph in the morning. Chance of precipitation is 40%.
Tuesday Night
Partly cloudy, with a low around 79. Southeast wind 3 to 7 mph.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
Partly cloudy, with a low around 78.
Thursday
Mostly sunny, with a high near 89.
Thursday Night
Scattered showers. Partly cloudy, with a low around 79. Chance of precipitation is 30%.
Friday
Showers likely. Mostly cloudy, with a high near 90. Chance of precipitation is 60%.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
San Juan PR
 18.41°N 66.07°W (Elev. 56 ft)
Last Update:
4:11 am AST Sep 21, 2024
Forecast Valid:
5am AST Sep 21, 2024-6pm AST Sep 27, 2024
 
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