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

70°F

21°C

Humidity 28%
Wind Speed N 0 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 06 Apr 08:20 PM MDT
Extended Forecast for

Ontario OR

  • Tonight

    Tonight: Mostly clear, with a low around 44. Light and variable wind becoming north around 5 mph.

    Low: 44 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75. Light west wind becoming west northwest 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38. Northwest wind 6 to 15 mph, with gusts as high as 25 mph.

    Low: 38 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 68. Northwest wind around 5 mph becoming calm in the morning.

    High: 68 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 39. East northeast wind around 6 mph becoming light and variable after midnight.

    Low: 39 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 44. Light and variable wind becoming north around 5 mph.
Tuesday
Sunny, with a high near 75. Light west wind becoming west northwest 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph.
Tuesday Night
Mostly clear, with a low around 38. Northwest wind 6 to 15 mph, with gusts as high as 25 mph.
Wednesday
Mostly sunny, with a high near 68. Northwest wind around 5 mph becoming calm in the morning.
Wednesday Night
Partly cloudy, with a low around 39. East northeast wind around 6 mph becoming light and variable after midnight.
Thursday
Sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Partly sunny, with a high near 72.
Friday Night
A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 47.
Saturday
A 50 percent chance of showers. Partly sunny, with a high near 70.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 44.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 62.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 39.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 60.
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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:
12:29 pm MDT Apr 6, 2026
Forecast Valid:
8pm MDT Apr 6, 2026-6pm MDT Apr 13, 2026
 
Forecast Discussion
 
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Additional Resources

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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