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

Heavy Rainfall and Flash Flood Threats Shift From Southern Plains to Lower Mississippi Valley; Elevated to Critical Fire Concerns Out West

Heavy to excessive rainfall with flash flood concerns will shift from the southern Plains into the Lower Mississippi Valley. Elevated to Critical Fire weather threats will linger through the weekend across the Great Basin and central Rockies. Finally, Major to Record river flooding will continue in portions of the Midwest and across parts of North and South Carolina this weekend. 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

84°F

29°C

Humidity 74%
Wind Speed NE 12 mph
Barometer 29.89 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 22 Sep 5:56 pm AST
Extended Forecast for

San Juan PR

  • Tonight

    Tonight: Scattered showers. Partly cloudy, with a low around 77. Southeast wind 6 to 13 mph. Chance of precipitation is 30%.

    Scattered
    Showers

    Low: 77 °F

  • Sunday

    Sunday: Isolated showers, then scattered showers and thunderstorms after noon. Mostly sunny, with a high near 90. East northeast wind 9 to 16 mph. Chance of precipitation is 40%.

    Scattered
    Showers

    High: 90 °F

  • Sunday
    Night

    Sunday Night: Isolated showers. Partly cloudy, with a low around 77. East wind 7 to 10 mph. Chance of precipitation is 20%.

    Isolated
    Showers

    Low: 77 °F

  • Monday

    Monday: Scattered showers, mainly before noon. Mostly sunny, with a high near 90. East northeast wind 11 to 17 mph. Chance of precipitation is 30%.

    Scattered
    Showers

    High: 90 °F

  • Monday
    Night

    Monday Night: Isolated showers. Partly cloudy, with a low around 76. East wind around 10 mph. Chance of precipitation is 20%.

    Isolated
    Showers

    Low: 76 °F

  • Tuesday

    Tuesday: Isolated showers, then scattered showers and thunderstorms after noon. Mostly sunny, with a high near 88. East wind 15 to 18 mph. Chance of precipitation is 50%.

    Isolated
    Showers then
    Scattered
    Showers

    High: 88 °F

  • Tuesday
    Night

    Tuesday Night: Scattered showers. Partly cloudy, with a low around 77. East wind 11 to 14 mph. Chance of precipitation is 40%.

    Scattered
    Showers

    Low: 77 °F

  • Wednesday

    Wednesday: Scattered showers. Mostly sunny, with a high near 89. East wind around 14 mph. Chance of precipitation is 50%.

    Scattered
    Showers

    High: 89 °F

  • Wednesday
    Night

    Wednesday Night: Scattered showers. Partly cloudy, with a low around 77. East wind around 9 mph. Chance of precipitation is 40%.

    Scattered
    Showers

    Low: 77 °F

Detailed Forecast

Tonight
Scattered showers. Partly cloudy, with a low around 77. Southeast wind 6 to 13 mph. Chance of precipitation is 30%.
Sunday
Isolated showers, then scattered showers and thunderstorms after noon. Mostly sunny, with a high near 90. East northeast wind 9 to 16 mph. Chance of precipitation is 40%.
Sunday Night
Isolated showers. Partly cloudy, with a low around 77. East wind 7 to 10 mph. Chance of precipitation is 20%.
Monday
Scattered showers, mainly before noon. Mostly sunny, with a high near 90. East northeast wind 11 to 17 mph. Chance of precipitation is 30%.
Monday Night
Isolated showers. Partly cloudy, with a low around 76. East wind around 10 mph. Chance of precipitation is 20%.
Tuesday
Isolated showers, then scattered showers and thunderstorms after noon. Mostly sunny, with a high near 88. East wind 15 to 18 mph. Chance of precipitation is 50%.
Tuesday Night
Scattered showers. Partly cloudy, with a low around 77. East wind 11 to 14 mph. Chance of precipitation is 40%.
Wednesday
Scattered showers. Mostly sunny, with a high near 89. East wind around 14 mph. Chance of precipitation is 50%.
Wednesday Night
Scattered showers. Partly cloudy, with a low around 77. East wind around 9 mph. Chance of precipitation is 40%.
Thursday
Scattered showers. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
Thursday Night
Scattered showers. Partly cloudy, with a low around 77. Chance of precipitation is 40%.
Friday
Scattered showers. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
Friday Night
Scattered showers. Partly cloudy, with a low around 78. Chance of precipitation is 30%.
Saturday
Scattered showers. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
San Juan PR
 18.41°N 66.08°W (Elev. 16 ft)
Last Update:
5:19 pm AST Sep 22, 2018
Forecast Valid:
6pm AST Sep 22, 2018-6pm AST Sep 29, 2018
 
Forecast Discussion
 
Get as KML Get as XML

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