Dangerous Heat and Humidity Building from the Plains to the East Coast

A strengthening ridge of high pressure will produce much above average temperatures from the Plains to the East Coast, a true summer heat wave. Highs in the 90s and triple digits combined w/ humidity and dewpoints surging into the upper 70s, if not low 80s, will create heat indices as high as 110 to 115 through this weekend. Air quality will likely be poor due to haze and little air circulation. 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

29°C

84°F

Humidity 74%
Wind Speed E 13 km/h
Barometer 30.08 in
Dewpoint 24°C (75°F)
Visibility 16 km
Heat Index33°C (92°F)
Last update 18 Jul 7:56 am AST
Extended Forecast for

Toa Alta PR

  • Today

    Today: Showers likely and possibly a thunderstorm after noon.  Mostly sunny, with a high near 32. East northeast wind 14 to 19 km/h increasing to 21 to 26 km/h in the afternoon. Winds could gust as high as 37 km/h.  Chance of precipitation is 60%.

    Mostly Sunny
    then Showers
    Likely

    High: 32 °C

  • Tonight

    Tonight: Scattered showers, mainly before midnight.  Partly cloudy, with a low around 26. Southeast wind 11 to 16 km/h.  Chance of precipitation is 40%.

    Scattered
    Showers

    Low: 26 °C

  • Friday

    Friday: Scattered showers, then showers likely and possibly a thunderstorm after noon.  Mostly sunny, with a high near 32. East wind 16 to 23 km/h, with gusts as high as 34 km/h.  Chance of precipitation is 70%. New rainfall amounts between 1 and 2 cm possible.

    Scattered
    Showers then
    Showers
    Likely

    High: 32 °C

  • Friday
    Night

    Friday Night: Isolated showers.  Partly cloudy, with a low around 26. East wind 11 to 16 km/h.  Chance of precipitation is 20%.

    Isolated
    Showers

    Low: 26 °C

  • Saturday

    Saturday: Isolated showers.  Mostly sunny, with a high near 32. East southeast wind 18 to 23 km/h, with gusts as high as 34 km/h.  Chance of precipitation is 20%.

    Isolated
    Showers

    High: 32 °C

  • Saturday
    Night

    Saturday Night: Isolated showers.  Partly cloudy, with a low around 23. East wind 14 to 16 km/h.  Chance of precipitation is 20%.

    Isolated
    Showers

    Low: 23 °C

  • Sunday

    Sunday: Mostly sunny, with a high near 31. East northeast wind 18 to 24 km/h, with gusts as high as 37 km/h.

    Mostly Sunny

    High: 31 °C

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 23. Southeast wind 10 to 16 km/h.

    Mostly Clear

    Low: 23 °C

  • Monday

    Monday: Scattered showers, mainly after noon.  Mostly sunny, with a high near 32. East wind 14 to 23 km/h, with gusts as high as 34 km/h.  Chance of precipitation is 40%.

    Mostly Sunny
    then
    Scattered
    Showers

    High: 32 °C

Detailed Forecast

Today
Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 32. East northeast wind 14 to 19 km/h increasing to 21 to 26 km/h in the afternoon. Winds could gust as high as 37 km/h. Chance of precipitation is 60%.
Tonight
Scattered showers, mainly before midnight. Partly cloudy, with a low around 26. Southeast wind 11 to 16 km/h. Chance of precipitation is 40%.
Friday
Scattered showers, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 32. East wind 16 to 23 km/h, with gusts as high as 34 km/h. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 cm possible.
Friday Night
Isolated showers. Partly cloudy, with a low around 26. East wind 11 to 16 km/h. Chance of precipitation is 20%.
Saturday
Isolated showers. Mostly sunny, with a high near 32. East southeast wind 18 to 23 km/h, with gusts as high as 34 km/h. Chance of precipitation is 20%.
Saturday Night
Isolated showers. Partly cloudy, with a low around 23. East wind 14 to 16 km/h. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 31. East northeast wind 18 to 24 km/h, with gusts as high as 37 km/h.
Sunday Night
Mostly clear, with a low around 23. Southeast wind 10 to 16 km/h.
Monday
Scattered showers, mainly after noon. Mostly sunny, with a high near 32. East wind 14 to 23 km/h, with gusts as high as 34 km/h. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 23.
Tuesday
Scattered showers. Mostly sunny, with a high near 32. Chance of precipitation is 40%.
Tuesday Night
Mostly clear, with a low around 26.
Wednesday
Mostly sunny, with a high near 32.
Click Map For Forecast
Point Forecast:
Toa Alta PR
 18.39°N 66.25°W (Elev. 27 m)
4:22 am AST Jul 18, 2019
8am AST Jul 18, 2019-6pm AST Jul 24, 2019
 
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Additional Resources

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