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Severe Thunderstorms With Heavy Rain Possible In The Upper Midwest; Excessive Heat For Central U.S.

Several rounds of strong to severe thunderstorms will be possible from the northern Plains and upper Midwest to the Great Lakes through Friday. Damaging winds, large hail, and flooding will be the primary threats with these storms. Excessive heat will grip the central Plains with heat indices approaching 105 to 110 degrees. Very hot and humid conditions are likely to expand into the Mid Atlantic. Read More >

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Mostly Cloudy

30°C

86°F

Humidity 75%
Wind Speed E 30 G 44 km/h
Barometer 30.04 in
Dewpoint 25°C (77°F)
Visibility 16 km
Heat Index36°C (97°F)
Last update 21 Jul 11:56 am AST
Extended Forecast for

San Juan PR

Flood Advisory until July 21, 12:45pm
Click here for hazard details and duration
...
  •  
    Flood Advisory until July 21, 12:45pm

    NOW until
    12:45pm Fri

    Flood Advisory

  • This
    Afternoon

    This Afternoon: Showers likely, mainly before 1pm.  Mostly sunny, with a high near 32. East northeast wind around 27 km/h.  Chance of precipitation is 60%.

    Showers
    Likely

    High: 32 °C

  • Tonight

    Tonight: Scattered showers.  Partly cloudy, with a low around 26. East wind 14 to 18 km/h.  Chance of precipitation is 30%.

    Scattered
    Showers

    Low: 26 °C

  • Saturday

    Saturday: Scattered showers.  Mostly sunny, with a high near 32. Heat index values as high as 39. East northeast wind 18 to 26 km/h.  Chance of precipitation is 30%.

    Scattered
    Showers

    High: 32 °C

  • Saturday
    Night

    Saturday Night: Scattered showers, then showers likely and possibly a thunderstorm after 10pm.  Mostly cloudy, with a low around 26. East wind 13 to 18 km/h.  Chance of precipitation is 60%.

    Showers
    Likely

    Low: 26 °C

  • Sunday

    Sunday: Scattered showers and thunderstorms.  Partly sunny, with a high near 32. East wind 18 to 27 km/h.  Chance of precipitation is 40%.

    Scattered
    Showers

    High: 32 °C

  • Sunday
    Night

    Sunday Night: Isolated showers.  Partly cloudy, with a low around 26. East wind 18 to 21 km/h.  Chance of precipitation is 20%.

    Isolated
    Showers

    Low: 26 °C

  • Monday

    Monday: Mostly sunny, with a high near 30. East wind 24 to 29 km/h.

    Mostly Sunny

    High: 30 °C

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 26. East wind 21 to 26 km/h decreasing to 13 to 18 km/h after midnight.

    Partly Cloudy

    Low: 26 °C

Detailed Forecast

This Afternoon
Showers likely, mainly before 1pm. Mostly sunny, with a high near 32. East northeast wind around 27 km/h. Chance of precipitation is 60%.
Tonight
Scattered showers. Partly cloudy, with a low around 26. East wind 14 to 18 km/h. Chance of precipitation is 30%.
Saturday
Scattered showers. Mostly sunny, with a high near 32. Heat index values as high as 39. East northeast wind 18 to 26 km/h. Chance of precipitation is 30%.
Saturday Night
Scattered showers, then showers likely and possibly a thunderstorm after 10pm. Mostly cloudy, with a low around 26. East wind 13 to 18 km/h. Chance of precipitation is 60%.
Sunday
Scattered showers and thunderstorms. Partly sunny, with a high near 32. East wind 18 to 27 km/h. Chance of precipitation is 40%.
Sunday Night
Isolated showers. Partly cloudy, with a low around 26. East wind 18 to 21 km/h. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 30. East wind 24 to 29 km/h.
Monday Night
Partly cloudy, with a low around 26. East wind 21 to 26 km/h decreasing to 13 to 18 km/h after midnight.
Tuesday
Mostly sunny, with a high near 33. East wind 16 to 21 km/h.
Tuesday Night
Partly cloudy, with a low around 26.
Wednesday
Mostly sunny, with a high near 32.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 26. Chance of precipitation is 40%.
Thursday
Scattered showers. Mostly sunny, with a high near 33. Chance of precipitation is 40%.
Click Map For Forecast
Point Forecast:
San Juan PR
 18.41°N 66.07°W (Elev. 17 m)
10:17 am AST Jul 21, 2017
12pm AST Jul 21, 2017-6pm AST Jul 27, 2017
 
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