Strong to Severe Thunderstorms, Heavy Rain, And Flash Flooding Across the Midwest

Strong to severe thunderstorms, heavy rain and flooding is possible from the Great Lakes to the south-central Plains, as a strong cold front pushes into the extended area. Meanwhile, well above average temperatures are very likely across the Northeastern quad of the country, including the Northeast, Mid-Atlantic, Great Lakes and Ohio Valley. Read More >

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

A Few Clouds

83°F

28°C

Humidity 77%
Wind Speed Calm
Barometer 29.97 in (1014.6 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 21 Sep 11:56 pm AST
Extended Forecast for

San Juan PR

High Surf Advisory until September 22, 06:00am
Click here for hazard details and duration
High Surf Advisory
  •  
    High Surf Advisory until September 22, 06:00am

    NOW until
    6:00am Sun

    High Surf Advisory

  • Overnight

    Overnight: Isolated showers.  Partly cloudy, with a low around 79. Southeast wind around 7 mph.  Chance of precipitation is 10%.

    Isolated
    Showers

    Low: 79 °F

  • Sunday

    Sunday: Scattered showers, mainly after noon.  Mostly sunny, with a high near 93. Heat index values as high as 103. East southeast wind 9 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 30%.

    Scattered
    Showers

    High: 93 °F

  • Sunday
    Night

    Sunday Night: Isolated showers.  Partly cloudy, with a low around 79. East southeast wind 8 to 10 mph.  Chance of precipitation is 10%.

    Isolated
    Showers

    Low: 79 °F

  • Monday

    Monday: Isolated showers.  Sunny, with a high near 91. Heat index values as high as 102. East wind 10 to 16 mph, with gusts as high as 21 mph.  Chance of precipitation is 10%.

    Isolated
    Showers

    High: 91 °F

  • Monday
    Night

    Monday Night: Scattered showers.  Mostly cloudy, with a low around 79. East wind 8 to 11 mph.  Chance of precipitation is 30%.

    Scattered
    Showers

    Low: 79 °F

  • Tuesday

    Tuesday: Scattered showers, then showers likely and possibly a thunderstorm after noon.  Partly sunny, with a high near 89. East southeast wind around 14 mph.  Chance of precipitation is 70%.

    Scattered
    Showers then
    Showers
    Likely

    High: 89 °F

  • Tuesday
    Night

    Tuesday Night: Showers likely.  Mostly cloudy, with a low around 77. West southwest wind 8 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%.

    Showers
    Likely

    Low: 77 °F

  • Wednesday

    Wednesday: Showers likely.  Mostly cloudy, with a high near 87. West southwest wind around 14 mph.  Chance of precipitation is 60%.

    Showers
    Likely

    High: 87 °F

Detailed Forecast

Overnight
Isolated showers. Partly cloudy, with a low around 79. Southeast wind around 7 mph. Chance of precipitation is 10%.
Sunday
Scattered showers, mainly after noon. Mostly sunny, with a high near 93. Heat index values as high as 103. East southeast wind 9 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Sunday Night
Isolated showers. Partly cloudy, with a low around 79. East southeast wind 8 to 10 mph. Chance of precipitation is 10%.
Monday
Isolated showers. Sunny, with a high near 91. Heat index values as high as 102. East wind 10 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 10%.
Monday Night
Scattered showers. Mostly cloudy, with a low around 79. East wind 8 to 11 mph. Chance of precipitation is 30%.
Tuesday
Scattered showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 89. East southeast wind around 14 mph. Chance of precipitation is 70%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 77. West southwest wind 8 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Wednesday
Showers likely. Mostly cloudy, with a high near 87. West southwest wind around 14 mph. Chance of precipitation is 60%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 78. South southwest wind 5 to 8 mph. Chance of precipitation is 60%.
Thursday
Showers likely, mainly after noon. Partly sunny, with a high near 90. Chance of precipitation is 60%.
Thursday Night
Showers likely. Mostly cloudy, with a low around 77. Chance of precipitation is 60%.
Friday
Scattered showers. Mostly sunny, with a high near 91. Chance of precipitation is 50%.
Friday Night
Scattered showers. Partly cloudy, with a low around 79. Chance of precipitation is 50%.
Saturday
Scattered showers. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
Click Map For Forecast
Point Forecast:
San Juan PR
 18.41°N 66.07°W (Elev. 56 ft)
9:57 pm AST Sep 21, 2019
12am AST Sep 22, 2019-6pm AST Sep 27, 2019
 
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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