Heavy Rain and Strong-to-Severe Thunderstorms from the Central Miss. Valley to the Mid-Atlantic

A slow-moving weather system in the eastern U.S. will focus showers and thunderstorms from the mid-Mississippi River Valley to the Mid-Atlantic on Thursday. Abundant moisture will allow occasionally heavy rainfall. Flash Flood Watches are in effect in these areas. Severe thunderstorms with damaging wind gusts and large hail will also be possible in this same area. Read More >

Hazardous Weather Conditions

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

A Few Clouds

28°C

82°F

Humidity 89%
Wind Speed E 11 km/h
Barometer 30.00 in
Dewpoint 26°C (79°F)
Visibility 16 km
Heat Index33°C (91°F)
Last update 28 Jul 1:56 am AST
Extended Forecast for

San Juan PR

  • Overnight

    Overnight: Isolated showers.  Mostly clear, with a low around 27. East wind around 11 km/h.  Chance of precipitation is 20%.

    Isolated
    Showers

    Low: 27 °C

  • Thursday

    Thursday: Scattered showers.  Mostly sunny, with a high near 33. Heat index values as high as 38. East northeast wind 14 to 19 km/h increasing to 21 to 26 km/h in the afternoon. Winds could gust as high as 35 km/h.  Chance of precipitation is 30%. New precipitation amounts between 1 and 2.5 mm possible.

    Scattered
    Showers

    High: 33 °C

  • Thursday
    Night

    Thursday Night: Scattered showers.  Partly cloudy, with a low around 27. East wind 10 to 14 km/h.  Chance of precipitation is 30%. New precipitation amounts between 1 and 2.5 mm possible.

    Scattered
    Showers

    Low: 27 °C

  • Friday

    Friday: Scattered showers, mainly before noon.  Sunny, with a high near 32. Heat index values as high as 37. East northeast wind 18 to 23 km/h increasing to 24 to 29 km/h in the afternoon. Winds could gust as high as 40 km/h.  Chance of precipitation is 30%. New precipitation amounts between 1 and 2.5 mm possible.

    Scattered
    Showers

    High: 32 °C

  • Friday
    Night

    Friday Night: Isolated showers.  Mostly clear, with a low around 27. East wind 13 to 21 km/h.  Chance of precipitation is 20%.

    Isolated
    Showers

    Low: 27 °C

  • Saturday

    Saturday: Isolated showers.  Sunny, with a high near 32. East northeast wind around 24 km/h.  Chance of precipitation is 20%.

    Isolated
    Showers

    High: 32 °C

  • Saturday
    Night

    Saturday Night: Isolated showers.  Mostly clear, with a low around 26. Northeast wind 10 to 16 km/h.  Chance of precipitation is 20%.

    Isolated
    Showers

    Low: 26 °C

  • Sunday

    Sunday: Scattered showers, with thunderstorms also possible after 1pm.  Mostly sunny, with a high near 33. East southeast wind 13 to 21 km/h.  Chance of precipitation is 50%.

    Scattered
    Showers

    High: 33 °C

  • Sunday
    Night

    Sunday Night: Scattered showers.  Mostly cloudy, with a low around 26. East wind 16 to 18 km/h.  Chance of precipitation is 30%.

    Scattered
    Showers

    Low: 26 °C

Detailed Forecast

Overnight
Isolated showers. Mostly clear, with a low around 27. East wind around 11 km/h. Chance of precipitation is 20%.
Thursday
Scattered showers. Mostly sunny, with a high near 33. Heat index values as high as 38. East northeast wind 14 to 19 km/h increasing to 21 to 26 km/h in the afternoon. Winds could gust as high as 35 km/h. Chance of precipitation is 30%. New precipitation amounts between 1 and 2.5 mm possible.
Thursday Night
Scattered showers. Partly cloudy, with a low around 27. East wind 10 to 14 km/h. Chance of precipitation is 30%. New precipitation amounts between 1 and 2.5 mm possible.
Friday
Scattered showers, mainly before noon. Sunny, with a high near 32. Heat index values as high as 37. East northeast wind 18 to 23 km/h increasing to 24 to 29 km/h in the afternoon. Winds could gust as high as 40 km/h. Chance of precipitation is 30%. New precipitation amounts between 1 and 2.5 mm possible.
Friday Night
Isolated showers. Mostly clear, with a low around 27. East wind 13 to 21 km/h. Chance of precipitation is 20%.
Saturday
Isolated showers. Sunny, with a high near 32. East northeast wind around 24 km/h. Chance of precipitation is 20%.
Saturday Night
Isolated showers. Mostly clear, with a low around 26. Northeast wind 10 to 16 km/h. Chance of precipitation is 20%.
Sunday
Scattered showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 33. East southeast wind 13 to 21 km/h. Chance of precipitation is 50%.
Sunday Night
Scattered showers. Mostly cloudy, with a low around 26. East wind 16 to 18 km/h. Chance of precipitation is 30%.
Monday
Scattered showers, mainly before 1pm. Mostly sunny, with a high near 32. Chance of precipitation is 30%.
Monday Night
Isolated showers. Partly cloudy, with a low around 26. Chance of precipitation is 20%.
Tuesday
Isolated showers. Mostly sunny, with a high near 33. Chance of precipitation is 20%.
Tuesday Night
Isolated showers. Partly cloudy, with a low around 27. Chance of precipitation is 20%.
Wednesday
Isolated showers. Mostly sunny, with a high near 31. Chance of precipitation is 20%.
Click Map For Forecast
Point Forecast:
San Juan PR
 18.41°N 66.07°W (Elev. 17 m)
10:01 pm AST Jul 27, 2016
2am AST Jul 28, 2016-6pm AST Aug 3, 2016
 
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