Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Partly Cloudy

95°F

35°C

Humidity 21%
Wind Speed NNW 13 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 22 Aug 05:53 PM MDT
Extended Forecast for

Ontario OR

  • Tonight

    Tonight: Isolated showers and thunderstorms before 9pm.  Partly cloudy, with a low around 66. Calm wind becoming west northwest 5 to 7 mph after midnight.  Chance of precipitation is 20%.

    Low: 66 °F

    Isolated
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny and hot, with a high near 92. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 92 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61. Calm wind becoming north northwest around 6 mph.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 94. Calm wind.

    High: 94 °F

    Hot

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

Tonight
Isolated showers and thunderstorms before 9pm. Partly cloudy, with a low around 66. Calm wind becoming west northwest 5 to 7 mph after midnight. Chance of precipitation is 20%.
Sunday
Sunny and hot, with a high near 92. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 61. Calm wind becoming north northwest around 6 mph.
Monday
Mostly sunny and hot, with a high near 94. Calm wind.
Monday Night
Mostly cloudy, with a low around 63. Calm wind.
Tuesday
Sunny and hot, with a high near 96.
Tuesday Night
Partly cloudy, with a low around 67.
Wednesday
Mostly sunny and hot, with a high near 96.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
Mostly sunny and hot, with a high near 92.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Mostly sunny and hot, with a high near 92.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Sunny and hot, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario OR
 44.03°N 116.97°W (Elev. 2103 ft)
3:43 pm MDT Aug 22, 2026
6pm MDT Aug 22, 2026-6pm MDT Aug 29, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database