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

79°F

26°C

Humidity 15%
Wind Speed WSW 4 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 09 May 05:15 PM MDT
Extended Forecast for

Ontario OR

  • Tonight

    Tonight: Partly cloudy, with a low around 47. Light and variable wind.

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 89. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. East wind 5 to 15 mph becoming west northwest after midnight.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 86. West northwest wind 5 to 9 mph becoming light and variable in the afternoon.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 53. North northeast wind around 6 mph becoming calm in the evening.

    Low: 53 °F

    Partly 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 59.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 55. Chance of precipitation is 20%.

    Low: 55 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 47. Light and variable wind.
Sunday
Sunny, with a high near 89. Calm wind becoming east southeast around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 56. East wind 5 to 15 mph becoming west northwest after midnight.
Monday
Sunny, with a high near 86. West northwest wind 5 to 9 mph becoming light and variable in the afternoon.
Monday Night
Partly cloudy, with a low around 53. North northeast wind around 6 mph becoming calm in the evening.
Tuesday
Sunny and hot, with a high near 96.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 55. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 84.
Thursday Night
A 20 percent chance of showers. Mostly clear, with a low around 51.
Friday
Sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ontario OR
 44.03°N 116.97°W (Elev. 2103 ft)
Last Update:
12:29 pm MDT May 9, 2026
Forecast Valid:
5pm MDT May 9, 2026-6pm MDT May 16, 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