Severe Storms and Heavy Rain in the Plains; Cool with Mountain Snow in the Great Basin and Rockies

A cold front combining with Imelda remnants will produce severe storms with large to very large hail, damaging winds, and heavy rain across the Central Plains and Middle Mississippi Valley. Storms may also develop in the Upper Midwest. Mountain snow in the North and Central Rockies, and widespread cooler than normal temperatures will follow the fronts passage. Read More >

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

A Few Clouds

84°F

29°C

Humidity 74%
Wind Speed SE 3 mph
Barometer 29.94 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 20 Sep 9:56 pm AST
Extended Forecast for

2 Miles E Guaynabo PR

High Surf Advisory until September 22, 06:00am
Coastal Flood Advisory until September 21, 06:00pm
Click here for hazard details and duration
High Surf Advisory
Coastal Flood Advisory
  •  
    High Surf Advisory until September 22, 06:00am
    Coastal Flood Advisory until September 21, 06:00pm

    NOW: Multiple
    hazards in effect

    Click HERE for Details

  • Tonight

    Tonight: Isolated showers.  Partly cloudy, with a low around 77. Light south wind.  Chance of precipitation is 20%.

    Isolated
    Showers

    Low: 77 °F

  • Saturday

    Saturday: Isolated showers, then showers likely and possibly a thunderstorm after noon.  Partly sunny, with a high near 90. South southeast wind 5 to 7 mph.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Isolated
    Showers then
    Showers
    Likely

    High: 90 °F

  • Saturday
    Night

    Saturday Night: Isolated showers.  Partly cloudy, with a low around 77. South wind 3 to 6 mph.  Chance of precipitation is 10%.

    Isolated
    Showers

    Low: 77 °F

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before noon, then scattered showers.  Mostly cloudy, with a high near 92. Heat index values as high as 102. Southeast wind 6 to 13 mph.  Chance of precipitation is 60%.

    Showers
    Likely

    High: 92 °F

  • Sunday
    Night

    Sunday Night: Isolated showers.  Partly cloudy, with a low around 77. East southeast wind 7 to 9 mph.  Chance of precipitation is 20%.

    Isolated
    Showers

    Low: 77 °F

  • Monday

    Monday: Scattered showers, mainly after noon.  Mostly sunny, with a high near 90. East southeast wind 9 to 14 mph.  Chance of precipitation is 40%.

    Scattered
    Showers

    High: 90 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 77. East wind around 11 mph.

    Partly Cloudy

    Low: 77 °F

  • Tuesday

    Tuesday: Showers likely, mainly after noon.  Partly sunny, with a high near 90. South southeast wind around 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%.

    Scattered
    Showers then
    Showers
    Likely

    High: 90 °F

Detailed Forecast

Tonight
Isolated showers. Partly cloudy, with a low around 77. Light south wind. Chance of precipitation is 20%.
Saturday
Isolated showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 90. South southeast wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Isolated showers. Partly cloudy, with a low around 77. South wind 3 to 6 mph. Chance of precipitation is 10%.
Sunday
Showers likely and possibly a thunderstorm before noon, then scattered showers. Mostly cloudy, with a high near 92. Heat index values as high as 102. Southeast wind 6 to 13 mph. Chance of precipitation is 60%.
Sunday Night
Isolated showers. Partly cloudy, with a low around 77. East southeast wind 7 to 9 mph. Chance of precipitation is 20%.
Monday
Scattered showers, mainly after noon. Mostly sunny, with a high near 90. East southeast wind 9 to 14 mph. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 77. East wind around 11 mph.
Tuesday
Showers likely, mainly after noon. Partly sunny, with a high near 90. South southeast wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 78. South wind around 7 mph. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 86. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 75. Chance of precipitation is 60%.
Thursday
Scattered showers. Partly sunny, with a high near 92. Chance of precipitation is 50%.
Thursday Night
Scattered showers. Partly cloudy, with a low around 77. Chance of precipitation is 50%.
Friday
Scattered showers. Partly sunny, with a high near 92. Chance of precipitation is 50%.
Click Map For Forecast
Point Forecast:
2 Miles E Guaynabo PR
 18.38°N 66.08°W (Elev. 138 ft)
5:12 pm AST Sep 20, 2019
11pm AST Sep 20, 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