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

43°F

6°C

Humidity 81%
Wind Speed WSW 3 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 31 Mar 03:05 AM MDT
Extended Forecast for

Ontario Municipal OR

  • Overnight

    Overnight: Showers likely, mainly after 4am. Mostly cloudy, with a low around 41. West northwest wind around 5 mph becoming calm. Chance of precipitation is 60%.

    Low: 41 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 2pm. High near 61. Calm wind becoming north northwest around 5 mph. Chance of precipitation is 80%.

    High: 61 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers after 5am. Patchy fog before 4am, then patchy fog after 5am. Low around 41. Northeast wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 41 °F

    Showers then
    Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 2pm. Patchy fog before 9am. High near 58. Light south southeast wind becoming south 8 to 13 mph in the morning. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 58 °F

    Showers
    Likely and
    Patchy Fog
    then Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 38. South wind around 11 mph becoming west southwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 38 °F

    Showers

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 3pm. High near 53. Chance of precipitation is 80%.

    High: 53 °F

    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

Detailed Forecast

Overnight
Showers likely, mainly after 4am. Mostly cloudy, with a low around 41. West northwest wind around 5 mph becoming calm. Chance of precipitation is 60%.
Tuesday
Showers, with thunderstorms also possible after 2pm. High near 61. Calm wind becoming north northwest around 5 mph. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers after 5am. Patchy fog before 4am, then patchy fog after 5am. Low around 41. Northeast wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 80%.
Wednesday
Showers, with thunderstorms also possible after 2pm. Patchy fog before 9am. High near 58. Light south southeast wind becoming south 8 to 13 mph in the morning. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm. Low around 38. South wind around 11 mph becoming west southwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers, with thunderstorms also possible after 3pm. High near 53. Chance of precipitation is 80%.
Thursday Night
Partly cloudy, with a low around 31.
Friday
Sunny, with a high near 58.
Friday Night
Mostly clear, with a low around 34.
Saturday
Sunny, with a high near 64.
Saturday Night
Mostly clear, with a low around 37.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario Municipal OR
 44.03°N 117°W (Elev. 2139 ft)
Last Update:
12:29 am MDT Mar 31, 2026
Forecast Valid:
3am MDT Mar 31, 2026-6pm MDT Apr 6, 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