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

Atmospheric River Continues to Impact the Northwest U.S.; Gusty to High Winds in the Northeast U.S.

A strong atmospheric river will continue moderate to heavy rainfall with possible flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. into Thursday. Additional impacts are likely into Friday with a cold front. A fast-moving storm system will cross the Northeast U.S. Wednesday into Thursday with gusty to high winds and areas of rain and high elevation snow showers. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Overcast

55°F

13°C

Humidity 71%
Wind Speed N 0 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 04 Nov 09:35 PM MST
Extended Forecast for

Ontario OR

  • Tonight

    Tonight: A 30 percent chance of showers before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 46. Light east northeast wind.

    Low: 46 °F

    Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Showers likely, mainly after 11am. Cloudy, with a high near 60. East northeast wind 6 to 11 mph becoming south southeast in the afternoon. Chance of precipitation is 70%.

    High: 60 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before 11pm. Mostly cloudy, with a low around 43. South wind 5 to 9 mph. Chance of precipitation is 70%.

    Low: 43 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers before 11am. Partly sunny, with a high near 61. South southwest wind 3 to 6 mph.

    High: 61 °F

    Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers. Low around 45. South southeast wind 5 to 7 mph. Chance of precipitation is 90%.

    Low: 45 °F

    Showers

  • Friday

    Friday: A 50 percent chance of showers before 11am. Partly sunny, with a high near 58.

    High: 58 °F

    Chance
    Showers then
    Mostly Sunny

  • Friday Night

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

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 31 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 46. Light east northeast wind.
Wednesday
Showers likely, mainly after 11am. Cloudy, with a high near 60. East northeast wind 6 to 11 mph becoming south southeast in the afternoon. Chance of precipitation is 70%.
Wednesday Night
Showers likely, mainly before 11pm. Mostly cloudy, with a low around 43. South wind 5 to 9 mph. Chance of precipitation is 70%.
Thursday
A 30 percent chance of showers before 11am. Partly sunny, with a high near 61. South southwest wind 3 to 6 mph.
Thursday Night
Showers. Low around 45. South southeast wind 5 to 7 mph. Chance of precipitation is 90%.
Friday
A 50 percent chance of showers before 11am. Partly sunny, with a high near 58.
Friday Night
Partly cloudy, with a low around 31.
Saturday
Mostly sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Partly sunny, with a high near 54.
Sunday Night
Mostly cloudy, with a low around 33.
Monday
Partly sunny, with a high near 54.
Monday Night
Partly cloudy, with a low around 33.
Veterans Day
Mostly sunny, with a high near 54.
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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:
2:04 pm MST Nov 4, 2025
Forecast Valid:
9pm MST Nov 4, 2025-6pm MST Nov 11, 2025
 
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