Cool and dry for much of the Central Plains and Rockies. Showers over the Great Lakes and Ohio Valley.

Unsettled weather conditions are likely across portions of the Great Lakes and Ohio Valley, with scattered to numerous showers. Expect cool and mostly dry conditions across much of the central U.S. and extending westward towards the Rocky Mountains. A few showers will be possible over the Pacific Northwest. Showers will also be possible over mountainous areas of Arizona and New Mexico. 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

27°C

81°F

Humidity 89%
Wind Speed E 7 km/h
Barometer 30.01 in
Dewpoint 25°C (77°F)
Visibility 16 km
Heat Index31°C (88°F)
Last update 28 Sep 5:56 am AST
Extended Forecast for

San Juan PR

  • Today

    Today: Isolated showers.  Mostly sunny, with a high near 33. Heat index values as high as 38. East northeast wind 16 to 21 km/h increasing to 22 to 27 km/h in the morning.  Chance of precipitation is 20%.

    Isolated
    Showers

    High: 33 °C

  • Tonight

    Tonight: Isolated showers, then scattered showers and thunderstorms after 1am.  Partly cloudy, with a low around 26. East northeast wind 29 to 34 km/h.  Chance of precipitation is 50%. New rainfall amounts between 5 and 7.5 mm possible.

    Isolated
    Showers then
    Scattered
    Showers

    Low: 26 °C

  • Thursday

    Thursday: Scattered showers and thunderstorms.  Mostly cloudy, with a high near 32. Heat index values as high as 36. East wind 32 to 39 km/h, with gusts as high as 48 km/h.  Chance of precipitation is 50%. New rainfall amounts between 1 and 2 cm possible.

    Scattered
    T-storms

    High: 32 °C

  • Thursday
    Night

    Thursday Night: Scattered showers and thunderstorms before 9pm, then isolated showers.  Partly cloudy, with a low around 25. East wind 26 to 32 km/h.  Chance of precipitation is 50%. New precipitation amounts between 5 and 7.5 mm possible.

    Scattered
    T-storms then
    Isolated
    Showers

    Low: 25 °C

  • Friday

    Friday: Isolated showers.  Mostly sunny, with a high near 31. East wind 24 to 29 km/h.  Chance of precipitation is 20%.

    Isolated
    Showers

    High: 31 °C

  • Friday
    Night

    Friday Night: Scattered showers, mainly after 9pm.  Partly cloudy, with a low around 24. East wind 16 to 23 km/h.  Chance of precipitation is 30%. New precipitation amounts between 1 and 2.5 mm possible.

    Scattered
    Showers

    Low: 24 °C

  • Saturday

    Saturday: Scattered showers, with thunderstorms also possible after 1pm.  Mostly sunny, with a high near 31. East wind 23 to 29 km/h.  Chance of precipitation is 40%.

    Scattered
    Showers

    High: 31 °C

  • Saturday
    Night

    Saturday Night: Scattered showers and thunderstorms before 9pm, then isolated showers.  Partly cloudy, with a low around 24. East southeast wind 13 to 21 km/h.  Chance of precipitation is 40%.

    Scattered
    Showers

    Low: 24 °C

  • Sunday

    Sunday: Isolated showers, then scattered showers and thunderstorms after 1pm.  Mostly sunny, with a high near 32. East southeast wind 16 to 18 km/h.  Chance of precipitation is 50%.

    Isolated
    Showers then
    Scattered
    Showers

    High: 32 °C

Detailed Forecast

Today
Isolated showers. Mostly sunny, with a high near 33. Heat index values as high as 38. East northeast wind 16 to 21 km/h increasing to 22 to 27 km/h in the morning. Chance of precipitation is 20%.
Tonight
Isolated showers, then scattered showers and thunderstorms after 1am. Partly cloudy, with a low around 26. East northeast wind 29 to 34 km/h. Chance of precipitation is 50%. New rainfall amounts between 5 and 7.5 mm possible.
Thursday
Scattered showers and thunderstorms. Mostly cloudy, with a high near 32. Heat index values as high as 36. East wind 32 to 39 km/h, with gusts as high as 48 km/h. Chance of precipitation is 50%. New rainfall amounts between 1 and 2 cm possible.
Thursday Night
Scattered showers and thunderstorms before 9pm, then isolated showers. Partly cloudy, with a low around 25. East wind 26 to 32 km/h. Chance of precipitation is 50%. New precipitation amounts between 5 and 7.5 mm possible.
Friday
Isolated showers. Mostly sunny, with a high near 31. East wind 24 to 29 km/h. Chance of precipitation is 20%.
Friday Night
Scattered showers, mainly after 9pm. Partly cloudy, with a low around 24. East wind 16 to 23 km/h. Chance of precipitation is 30%. New precipitation amounts between 1 and 2.5 mm possible.
Saturday
Scattered showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 31. East wind 23 to 29 km/h. Chance of precipitation is 40%.
Saturday Night
Scattered showers and thunderstorms before 9pm, then isolated showers. Partly cloudy, with a low around 24. East southeast wind 13 to 21 km/h. Chance of precipitation is 40%.
Sunday
Isolated showers, then scattered showers and thunderstorms after 1pm. Mostly sunny, with a high near 32. East southeast wind 16 to 18 km/h. Chance of precipitation is 50%.
Sunday Night
Scattered showers and thunderstorms before 9pm, then isolated showers. Partly cloudy, with a low around 25. Chance of precipitation is 50%.
Monday
Isolated showers. Mostly sunny, with a high near 33. Chance of precipitation is 20%.
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%.
Click Map For Forecast
Point Forecast:
San Juan PR
 18.41°N 66.07°W (Elev. 17 m)
5:01 am AST Sep 28, 2016
6am AST Sep 28, 2016-6pm AST Oct 4, 2016
 
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