Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Mostly Cloudy

45°F

7°C

Humidity 89%
Wind Speed NNW 4 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 09 Dec 08:53 PM MST
Extended Forecast for

35 Miles SSE Unity OR

  • Tonight

    Tonight: A 40 percent chance of rain before 11pm.  Mostly cloudy, with a low around 43. Breezy, with a west southwest wind 18 to 25 mph, with gusts as high as 34 mph.

    Low: 43 °F

    Breezy.
    Chance Rain
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 50. Breezy, with a west southwest wind 15 to 23 mph, with gusts as high as 34 mph.

    High: 50 °F

    Mostly Cloudy
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 38. West southwest wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 38 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 49. West southwest wind 10 to 14 mph.

    High: 49 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 34. West wind around 9 mph.

    Low: 34 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 40 percent chance of rain before 11pm. Mostly cloudy, with a low around 43. Breezy, with a west southwest wind 18 to 25 mph, with gusts as high as 34 mph.
Wednesday
Mostly cloudy, with a high near 50. Breezy, with a west southwest wind 15 to 23 mph, with gusts as high as 34 mph.
Wednesday Night
Partly cloudy, with a low around 38. West southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Thursday
Mostly sunny, with a high near 49. West southwest wind 10 to 14 mph.
Thursday Night
Partly cloudy, with a low around 34. West wind around 9 mph.
Friday
Mostly sunny, with a high near 47.
Friday Night
Partly cloudy, with a low around 33.
Saturday
Mostly sunny, with a high near 45.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Partly sunny, with a high near 44.
Sunday Night
Mostly cloudy, with a low around 33.
Monday
A chance of rain and snow. Snow level 5800 feet rising to 6500 feet in the afternoon. Partly sunny, with a high near 42. Chance of precipitation is 30%.
Monday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 36.
Tuesday
A chance of rain and snow. Snow level 6200 feet. Partly sunny, with a high near 43. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
35 Miles SSE Unity OR
 43.95°N 118.02°W (Elev. 5505 ft)
2:04 pm MST Dec 9, 2025
9pm MST Dec 9, 2025-6pm MST Dec 16, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database