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.

Mostly Cloudy

37°F

3°C

Humidity 86%
Wind Speed SSE 3 MPH
Barometer 30.31 in (1026.41 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 07 Mar 02:35 AM MST
Extended Forecast for

Ontario OR

  • Overnight

    Overnight: A 20 percent chance of showers. Mostly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Cloudy, then gradually becoming mostly sunny, with a high near 56. Calm wind becoming east around 5 mph in the afternoon.

    High: 56 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Patchy fog after 2am. Otherwise, increasing clouds, with a low around 33. Light and variable wind.

    Low: 33 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 63. Calm wind.

    High: 63 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. East northeast wind around 6 mph becoming west northwest after midnight.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers. Mostly cloudy, with a low around 38. Calm wind.
Saturday
Cloudy, then gradually becoming mostly sunny, with a high near 56. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
Patchy fog after 2am. Otherwise, increasing clouds, with a low around 33. Light and variable wind.
Sunday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 63. Calm wind.
Sunday Night
Mostly clear, with a low around 39. East northeast wind around 6 mph becoming west northwest after midnight.
Monday
Partly sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Partly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
A 20 percent chance of rain after 11am. Mostly cloudy, with a high near 57.
Wednesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 37.
Thursday
A 20 percent chance of rain. Cloudy, with a high near 64.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 38.
Friday
A 20 percent chance of rain. Mostly cloudy, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario OR
 44.03°N 116.97°W (Elev. 2103 ft)
Last Update:
2:04 am MST Mar 7, 2026
Forecast Valid:
2am MST Mar 7, 2026-6pm MDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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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