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

Ontario Municipal Airport (KONO)

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

Clear

88°F

31°C

Humidity 27%
Wind Speed SSW 4 MPH
Barometer 29.76 in (1007.79 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 19 Jun 06:35 PM MDT
Extended Forecast for

Ontario OR

  • Tonight

    Tonight: Isolated showers and thunderstorms after 3am. Increasing clouds, with a low around 69. Light and variable wind becoming west 6 to 11 mph after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 20%.

    Low: 69 °F

    Mostly Cloudy
    then Isolated
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly cloudy, with a high near 87. West wind 5 to 7 mph becoming south southeast in the afternoon.

    High: 87 °F

    Chance
    T-storms then
    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58. Southeast wind 5 to 8 mph becoming northwest after midnight. Winds could gust as high as 20 mph.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 89. West northwest wind 6 to 8 mph.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 57. North northeast wind 7 to 11 mph becoming northwest after midnight. Winds could gust as high as 22 mph.

    Low: 57 °F

    Clear

  • Monday

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

    High: 91 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 57.

    Low: 57 °F

    Clear

  • Tuesday

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

    High: 96 °F

    Hot

  • Tuesday Night

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

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Tonight
Isolated showers and thunderstorms after 3am. Increasing clouds, with a low around 69. Light and variable wind becoming west 6 to 11 mph after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 20%.
Saturday
A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly cloudy, with a high near 87. West wind 5 to 7 mph becoming south southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 58. Southeast wind 5 to 8 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 89. West northwest wind 6 to 8 mph.
Sunday Night
Clear, with a low around 57. North northeast wind 7 to 11 mph becoming northwest after midnight. Winds could gust as high as 22 mph.
Monday
Sunny and hot, with a high near 91.
Monday Night
Clear, with a low around 57.
Tuesday
Sunny and hot, with a high near 96.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Sunny and hot, with a high near 98.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny and hot, with a high near 97.
Thursday Night
Mostly clear, with a low around 62.
Friday
Sunny and hot, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario OR
 44.03°N 117°W (Elev. 2139 ft)
Last Update:
12:29 pm MDT Jun 19, 2026
Forecast Valid:
6pm MDT Jun 19, 2026-6pm MDT Jun 26, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation