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

91°F

33°C

Humidity 22%
Wind Speed SSW 4 MPH
Barometer 29.8 in (1009.14 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 19 Jun 03:20 PM MDT
Extended Forecast for

Ontario OR

  • Tonight

    Tonight: Isolated showers and thunderstorms after 3am. Increasing clouds, with a low around 68. Calm wind becoming west 5 to 9 mph after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    Low: 68 °F

    Mostly Cloudy
    then Isolated
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly before 7am. Cloudy, then gradually becoming mostly sunny, 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: Mostly clear, with a low around 57. Light and variable wind becoming west 5 to 7 mph after midnight.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 89. West northwest wind 5 to 7 mph.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 56. North northeast wind 7 to 10 mph becoming west after midnight. Winds could gust as high as 21 mph.

    Low: 56 °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 56.

    Low: 56 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Tuesday Night

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

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Tonight
Isolated showers and thunderstorms after 3am. Increasing clouds, with a low around 68. Calm wind becoming west 5 to 9 mph after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Saturday
A 30 percent chance of showers and thunderstorms, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 87. West wind 5 to 7 mph becoming south southeast in the afternoon.
Saturday Night
Mostly clear, with a low around 57. Light and variable wind becoming west 5 to 7 mph after midnight.
Sunday
Sunny, with a high near 89. West northwest wind 5 to 7 mph.
Sunday Night
Clear, with a low around 56. North northeast wind 7 to 10 mph becoming west after midnight. Winds could gust as high as 21 mph.
Monday
Sunny and hot, with a high near 91.
Monday Night
Clear, with a low around 56.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Sunny and hot, with a high near 99.
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 61.
Friday
Sunny and hot, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ontario OR
 44.01°N 116.97°W (Elev. 2113 ft)
Last Update:
12:29 pm MDT Jun 19, 2026
Forecast Valid:
3pm MDT Jun 19, 2026-6pm MDT Jun 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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