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

Excessive Rainfall and Flooding Threat Along the Texas Coast; Heat Persists from the Midwest to the Northeast

Potential Tropical Cyclone One will likely bring very heavy rainfall to coastal Texas today and eventually the Rio Grande Valley early Thursday morning. Coastal flooding and tropical-storm-force winds are also possible along the Texas Coast. Excessive heat will continue to persist from the Midwest to the Northeast and Mid-Atlantic this week. Read More >

Hazardous Weather Conditions

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Partly Cloudy

85°F

29°C

Humidity 80%
Wind Speed E 6 mph
Barometer 29.96 in (1014.4 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 19 Jun 7:56 pm AST
Extended Forecast for

San Juan PR

  • Tonight

    Tonight: Scattered showers and thunderstorms. Partly cloudy, with a low around 79. East wind 8 to 10 mph. Chance of precipitation is 40%.

    Low: 79 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers, mainly after noon. Increasing clouds, with a high near 91. Heat index values as high as 106. East wind 11 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

    High: 91 °F

    Isolated
    Showers then
    Scattered
    Showers

  • Thursday Night

    Thursday Night: Isolated showers after midnight. Mostly clear, with a low around 78. East wind around 10 mph. Chance of precipitation is 20%.

    Low: 78 °F

    Mostly Clear
    then Isolated
    Showers

  • Friday

    Friday: Scattered showers. Mostly sunny, with a high near 92. Heat index values as high as 106. East northeast wind 10 to 14 mph. Chance of precipitation is 50%.

    High: 92 °F

    Scattered
    Showers

  • Friday Night

    Friday Night: Isolated showers after midnight. Mostly clear, with a low around 80. East wind 7 to 9 mph. Chance of precipitation is 20%.

    Low: 80 °F

    Clear then
    Isolated
    Showers

  • Saturday

    Saturday: Scattered showers, mainly after noon. Mostly sunny, with a high near 91. East wind 7 to 13 mph. Chance of precipitation is 40%.

    High: 91 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: Scattered showers. Partly cloudy, with a low around 80. East southeast wind 6 to 9 mph. Chance of precipitation is 30%.

    Low: 80 °F

    Scattered
    Showers

  • Sunday

    Sunday: Scattered showers. Partly sunny, with a high near 90. East wind 10 to 15 mph. Chance of precipitation is 50%.

    High: 90 °F

    Scattered
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 79. East southeast wind 7 to 9 mph.

    Low: 79 °F

    Partly Cloudy

Detailed Forecast

Tonight
Scattered showers and thunderstorms. Partly cloudy, with a low around 79. East wind 8 to 10 mph. Chance of precipitation is 40%.
Thursday
Scattered showers, mainly after noon. Increasing clouds, with a high near 91. Heat index values as high as 106. East wind 11 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Isolated showers after midnight. Mostly clear, with a low around 78. East wind around 10 mph. Chance of precipitation is 20%.
Friday
Scattered showers. Mostly sunny, with a high near 92. Heat index values as high as 106. East northeast wind 10 to 14 mph. Chance of precipitation is 50%.
Friday Night
Isolated showers after midnight. Mostly clear, with a low around 80. East wind 7 to 9 mph. Chance of precipitation is 20%.
Saturday
Scattered showers, mainly after noon. Mostly sunny, with a high near 91. East wind 7 to 13 mph. Chance of precipitation is 40%.
Saturday Night
Scattered showers. Partly cloudy, with a low around 80. East southeast wind 6 to 9 mph. Chance of precipitation is 30%.
Sunday
Scattered showers. Partly sunny, with a high near 90. East wind 10 to 15 mph. Chance of precipitation is 50%.
Sunday Night
Partly cloudy, with a low around 79. East southeast wind 7 to 9 mph.
Monday
Scattered showers, mainly before noon. Mostly sunny, with a high near 92. Chance of precipitation is 40%.
Monday Night
Showers likely. Mostly cloudy, with a low around 80. Chance of precipitation is 60%.
Tuesday
Scattered showers. Mostly sunny, with a high near 93. Chance of precipitation is 40%.
Tuesday Night
Scattered showers. Partly cloudy, with a low around 79. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 91.
Click Map For Forecast
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
San Juan PR
 18.41°N 66.07°W (Elev. 56 ft)
Last Update:
4:04 pm AST Jun 19, 2024
Forecast Valid:
8pm AST Jun 19, 2024-6pm AST Jun 26, 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