Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

48°F

9°C

Humidity 87%
Wind Speed NNE 6 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 45°F (7°C)
Visibility 7.00 mi
Wind Chill45°F (7°C)
Last update 10 Dec 05:20 PM MST
Extended Forecast for

Ontario Municipal OR

Air Stagnation Advisory December 12, 05:00am until December 15, 05:00am
Click here for hazard details and duration
Air Stagnation Advisory
  • Tonight

    Tonight: Patchy fog after 11pm.  Otherwise, mostly cloudy, with a low around 38. Light and variable wind.

    Low: 38 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 11am.  Otherwise, mostly sunny, with a high near 55. Calm wind.

    High: 55 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 5am.  Otherwise, partly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 11am.  Otherwise, mostly sunny, with a high near 52. Calm wind.

    High: 52 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

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

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: Patchy fog before 11am.  Otherwise, mostly sunny, with a high near 49.

    High: 49 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 38. Light and variable wind.
Thursday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 55. Calm wind.
Thursday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 34. Calm wind.
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 52. Calm wind.
Friday Night
Partly cloudy, with a low around 31. Calm wind.
Saturday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 49.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Mostly sunny, with a high near 47.
Sunday Night
Mostly cloudy, with a low around 31.
Monday
A 30 percent chance of rain, mainly after 11am. Mostly cloudy, with a high near 47.
Monday Night
Rain likely. Mostly cloudy, with a low around 36. Chance of precipitation is 60%.
Tuesday
A 50 percent chance of rain. Partly sunny, with a high near 55.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 38.
Wednesday
A 40 percent chance of rain. Partly sunny, with a high near 52.
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario Municipal OR
 44.03°N 117°W (Elev. 2139 ft)
2:04 pm MST Dec 10, 2025
5pm MST Dec 10, 2025-6pm MST Dec 17, 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