National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Hazardous Weather Conditions

Current conditions at

Ontario Municipal Airport (KONO)

Lat: 44.01424°NLon: 117.00808°WElev: 2185.0ft.

Clear

93°F

34°C

Humidity 21%
Wind Speed N 0 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 19 Aug 07:35 PM MDT
Extended Forecast for

7 Miles WSW Vale OR

Heat Advisory August 20, 12:00pm until August 21, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 63. Light and variable wind.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100. Calm wind becoming east 5 to 7 mph in the afternoon.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 66. East wind 5 to 7 mph becoming calm in the evening.

    Low: 66 °F

    Increasing
    Clouds

  • Friday

    Friday: Patchy smoke between 9am and 1pm. Partly sunny and hot, with a high near 100. Calm wind becoming east around 5 mph in the afternoon.

    High: 100 °F

    Patchy Smoke

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 69. Light and variable wind.

    Low: 69 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 91.

    High: 91 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 63. Light and variable wind.
Thursday
Sunny and hot, with a high near 100. Calm wind becoming east 5 to 7 mph in the afternoon.
Thursday Night
Increasing clouds, with a low around 66. East wind 5 to 7 mph becoming calm in the evening.
Friday
Patchy smoke between 9am and 1pm. Partly sunny and hot, with a high near 100. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 69. Light and variable wind.
Saturday
Partly sunny and hot, with a high near 96.
Saturday Night
Mostly clear, with a low around 62.
Sunday
Sunny and hot, with a high near 91.
Sunday Night
Mostly clear, with a low around 61.
Monday
Mostly sunny and hot, with a high near 92.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Mostly sunny and hot, with a high near 94.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
Mostly sunny and hot, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles WSW Vale OR
 43.94°N 117.38°W (Elev. 2293 ft)
Last Update:
12:32 pm MDT Aug 19, 2026
Forecast Valid:
8pm MDT Aug 19, 2026-6pm MDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

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Chance of Precipitation