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

Hazardous Weather Conditions

Current conditions at

Ontario Municipal Airport (KONO)

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

Overcast

28°F

-2°C

Humidity 86%
Wind Speed NW 5 MPH
Barometer 30.42 in (1030.14 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 18 Jan 08:05 PM MST
Extended Forecast for

Ontario OR

Air Stagnation Advisory January 18, 08:20pm until January 22, 11:00am
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 18, 08:20pm until January 22, 11:00am

    NOW until 11:00am Thu

    Air Stagnation Advisory

  • Tonight

    Low: 24 °F

    Patchy Fog

  • M.L.King Day

    M.L.King Day: Patchy fog before 11am. Otherwise, cloudy, with a high near 31. Calm wind.

    High: 31 °F

    Patchy Fog
    then Cloudy

  • Monday Night

    Monday Night: Patchy fog after 8pm. Otherwise, cloudy, with a low around 24. Calm wind.

    Low: 24 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 11am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 31. Calm wind.

    High: 31 °F

    Patchy Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 23. Calm wind.

    Low: 23 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

Detailed Forecast

Tonight
Patchy fog. Otherwise, cloudy, with a low around 24. Calm wind.
M.L.King Day
Patchy fog before 11am. Otherwise, cloudy, with a high near 31. Calm wind.
Monday Night
Patchy fog after 8pm. Otherwise, cloudy, with a low around 24. Calm wind.
Tuesday
Patchy fog before 11am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 31. Calm wind.
Tuesday Night
Partly cloudy, with a low around 23. Calm wind.
Wednesday
Mostly sunny, with a high near 34.
Wednesday Night
Mostly cloudy, with a low around 25.
Thursday
Partly sunny, with a high near 41.
Thursday Night
Partly cloudy, with a low around 25.
Friday
Mostly sunny, with a high near 43.
Friday Night
Mostly cloudy, with a low around 28.
Saturday
A slight chance of rain and snow. Partly sunny, with a high near 44. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
A slight chance of rain and snow. Partly sunny, with a high near 45. Chance of precipitation is 20%.
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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:
5:16 pm MST Jan 18, 2026
Forecast Valid:
8pm MST Jan 18, 2026-6pm MST Jan 25, 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