Severe Storms in the Upper Midwest; Heavy Rain in the Mid-Atlantic; Widespread Heat in the Southwest

Severe storms with damaging winds, large hail, and locally heavy rain will impact portions of the Upper Midwest. A lingering front will bring another round of heavy showers and thunderstorms to the Mid-Atlantic. Excessive heat continues in the South Plains to the Southwest, and fire weather threats remain Critical across the Great Basin, Northern Rockies, and into the Plains. Read More >

Current conditions at

Ontario International Airport (KONT)

Lat: 34.05316°NLon: 117.57685°WElev: 906ft.

Clear

82°F

28°C

Humidity 28%
Wind Speed WSW 10 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 12 Aug 08:15 PM PDT
Extended Forecast for

Ontario CA

Excessive Heat Warning August 14, 12:00pm until August 17, 09:00pm
Click here for hazard details and duration
Excessive Heat Warning
  • Tonight

    Tonight: Partly cloudy, with a low around 70. West wind 5 to 10 mph becoming light and variable  after midnight. Winds could gust as high as 20 mph.

    Partly Cloudy

    Low: 70 °F

  • Thursday

    Thursday: Partly sunny, with a high near 100. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    Partly Sunny

    High: 100 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 72. West wind 10 to 15 mph becoming light and variable  in the evening. Winds could gust as high as 20 mph.

    Partly Cloudy

    Low: 72 °F

  • Friday

    Friday: Sunny, with a high near 104. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    Sunny

    High: 104 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 74. West wind 10 to 15 mph becoming light and variable  in the evening. Winds could gust as high as 20 mph.

    Mostly Clear

    Low: 74 °F

  • Saturday

    Saturday: Sunny, with a high near 104.

    Sunny

    High: 104 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 74.

    Mostly Clear

    Low: 74 °F

  • Sunday

    Sunday: Sunny, with a high near 102.

    Sunny

    High: 102 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 72.

    Mostly Clear

    Low: 72 °F

Detailed Forecast

Tonight
Partly cloudy, with a low around 70. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Thursday
Partly sunny, with a high near 100. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 72. West wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Friday
Sunny, with a high near 104. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 74. West wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 104.
Saturday Night
Mostly clear, with a low around 74.
Sunday
Sunny, with a high near 102.
Sunday Night
Mostly clear, with a low around 72.
Monday
Mostly sunny, with a high near 101.
Monday Night
Mostly clear, with a low around 72.
Tuesday
Sunny, with a high near 101.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
Sunny, with a high near 101.
Click Map For Forecast
Point Forecast:
Ontario CA
 34.05°N 117.64°W (Elev. 919 ft)
1:47 pm PDT Aug 12, 2020
8pm PDT Aug 12, 2020-6pm PDT Aug 19, 2020
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database