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

52°F

11°C

Humidity 66%
Wind Speed SW 4 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 21 Mar 03:20 AM MDT
Extended Forecast for

Ontario OR

  • Overnight

    Overnight: Partly cloudy, with a low around 48. Light northwest wind.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 67. North northwest wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 67 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34. North northwest wind 7 to 16 mph, with gusts as high as 25 mph.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 62. Northwest wind 3 to 6 mph.

    High: 62 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 36. North wind 3 to 6 mph.

    Low: 36 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 67.

    High: 67 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Slight Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 48. Light northwest wind.
Saturday
Partly sunny, with a high near 67. North northwest wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.
Saturday Night
Mostly clear, with a low around 34. North northwest wind 7 to 16 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 62. Northwest wind 3 to 6 mph.
Sunday Night
Mostly cloudy, with a low around 36. North wind 3 to 6 mph.
Monday
Partly sunny, with a high near 65.
Monday Night
Mostly cloudy, with a low around 45.
Tuesday
A 30 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 67.
Tuesday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 47.
Wednesday
A 20 percent chance of showers before noon. Mostly cloudy, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
Mostly sunny, with a high near 58.
Thursday Night
Partly cloudy, with a low around 34.
Friday
Mostly sunny, with a high near 64.
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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 am MDT Mar 21, 2026
Forecast Valid:
3am MDT Mar 21, 2026-6pm MDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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