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

57°F

14°C

Humidity 32%
Wind Speed ESE 8 MPH
Barometer 30.3 in (1026.08 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 11 Mar 04:53 PM MDT
Extended Forecast for

Ontario OR

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. Southeast wind 5 to 8 mph becoming south southwest after midnight.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of rain before noon. Mostly cloudy, with a high near 60. Southwest wind 9 to 18 mph, with gusts as high as 30 mph.

    High: 60 °F

    Slight Chance
    Rain then
    Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before midnight. Cloudy, with a low around 44. Southwest wind 8 to 13 mph, with gusts as high as 22 mph.

    Low: 44 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of rain before noon. Cloudy, with a high near 62. Southwest wind 7 to 13 mph.

    High: 62 °F

    Slight Chance
    Rain then
    Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of rain. Cloudy, with a low around 46. West wind 6 to 10 mph.

    Low: 46 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: Rain likely, mainly before noon. Mostly cloudy, with a high near 62. Breezy. Chance of precipitation is 60%.

    High: 62 °F

    Rain Likely
    then Chance
    Rain and
    Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34. Breezy.

    Low: 34 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Sunday

    Sunday: A slight chance of rain and snow before noon, then a slight chance of rain. Mostly cloudy, with a high near 54. Chance of precipitation is 20%.

    High: 54 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: A 30 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 40. Southeast wind 5 to 8 mph becoming south southwest after midnight.
Thursday
A 20 percent chance of rain before noon. Mostly cloudy, with a high near 60. Southwest wind 9 to 18 mph, with gusts as high as 30 mph.
Thursday Night
A 20 percent chance of rain before midnight. Cloudy, with a low around 44. Southwest wind 8 to 13 mph, with gusts as high as 22 mph.
Friday
A 20 percent chance of rain before noon. Cloudy, with a high near 62. Southwest wind 7 to 13 mph.
Friday Night
A 20 percent chance of rain. Cloudy, with a low around 46. West wind 6 to 10 mph.
Saturday
Rain likely, mainly before noon. Mostly cloudy, with a high near 62. Breezy. Chance of precipitation is 60%.
Saturday Night
Mostly cloudy, with a low around 34. Breezy.
Sunday
A slight chance of rain and snow before noon, then a slight chance of rain. Mostly cloudy, with a high near 54. Chance of precipitation is 20%.
Sunday Night
A 30 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 40.
Monday
A 20 percent chance of rain before noon. Mostly cloudy, with a high near 66.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
Mostly sunny, with a high near 77.
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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:
3:05 pm MDT Mar 11, 2026
Forecast Valid:
5pm MDT Mar 11, 2026-6pm MDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation