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.

Clear

66°F

19°C

Humidity 45%
Wind Speed W 8 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 45°F (7°C)
Visibility 7.00 mi
Last update 23 Aug 05:35 AM MDT
Extended Forecast for

Ontario Municipal OR

  • Today

    Today: Sunny and hot, with a high near 92. West southwest wind 5 to 10 mph.

    High: 92 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 59. West wind 5 to 10 mph becoming light and variable. Winds could gust as high as 20 mph.

    Low: 59 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny and hot, with a high near 93. Northwest wind around 5 mph becoming calm  in the morning.

    High: 93 °F

    Hot

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. East wind around 6 mph becoming calm  after midnight.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny and hot, with a high near 96. Light and variable wind becoming south southeast around 5 mph in the afternoon.

    High: 96 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly 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

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 93.

    High: 93 °F

    Hot

Detailed Forecast

Today
Sunny and hot, with a high near 92. West southwest wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 59. West wind 5 to 10 mph becoming light and variable. Winds could gust as high as 20 mph.
Monday
Partly sunny and hot, with a high near 93. Northwest wind around 5 mph becoming calm in the morning.
Monday Night
Partly cloudy, with a low around 62. East wind around 6 mph becoming calm after midnight.
Tuesday
Sunny and hot, with a high near 96. Light and variable wind becoming south southeast around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 64.
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 93.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Sunny and hot, with a high near 92.
Friday Night
Mostly clear, with a low around 60.
Saturday
Sunny and hot, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario Municipal OR
 44.03°N 117°W (Elev. 2139 ft)
12:29 am MDT Aug 23, 2026
5am MDT Aug 23, 2026-6pm MDT Aug 29, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database