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

Marginal Risks of Severe Storms on the Central Plains; Flash flooding on the Northern Plains; Frost & Freeze Warnings in portions of the West & Northeast

A storm system developing across the Plains may cause locally severe weather in western Kansas and southwestern Nebraska today, with isolated flash flooding possible in portions of eastern Montana and western North Dakota. Frost and Freeze Warnings are in effect for portions of the central Rockies and central Appalachians tonight into Friday morning. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

45°F

7°C

Humidity 65%
Wind Speed WNW 13 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 16 Oct 06:05 AM MDT
Extended Forecast for

Ontario OR

  • Today

    Today: Sunny, with a high near 64. Northwest wind 6 to 9 mph.

    High: 64 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 38. Northwest wind around 6 mph becoming calm in the evening.

    Low: 38 °F

    Increasing
    Clouds

  • Friday

    Friday: Patchy frost between 8am and 9am. Otherwise, sunny, with a high near 65. Calm wind.

    High: 65 °F

    Patchy Frost
    then Sunny

  • Friday Night

    Friday Night: Clear, with a low around 34. Light and variable wind becoming north northwest around 5 mph.

    Low: 34 °F

    Clear

  • Saturday

    Saturday: Areas of frost before 10am. Otherwise, sunny, with a high near 63. Calm wind.

    High: 63 °F

    Areas Frost
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: Showers likely, mainly after noon. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.

    High: 61 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 64. Northwest wind 6 to 9 mph.
Tonight
Increasing clouds, with a low around 38. Northwest wind around 6 mph becoming calm in the evening.
Friday
Patchy frost between 8am and 9am. Otherwise, sunny, with a high near 65. Calm wind.
Friday Night
Clear, with a low around 34. Light and variable wind becoming north northwest around 5 mph.
Saturday
Areas of frost before 10am. Otherwise, sunny, with a high near 63. Calm wind.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Showers likely, mainly after noon. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.
Sunday Night
A 40 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 36.
Monday
Mostly sunny, with a high near 57.
Monday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 32.
Tuesday
Areas of fog. Otherwise, sunny, with a high near 56.
Tuesday Night
Mostly clear, with a low around 33.
Wednesday
Patchy fog. Otherwise, sunny, with a high near 59.
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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:
3:04 am MDT Oct 16, 2025
Forecast Valid:
6am MDT Oct 16, 2025-6pm MDT Oct 22, 2025
 
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