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

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 >

Hazardous Weather Conditions

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 NNW 3 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 10 Dec 01:35 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

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 60. Light and variable wind.

    High: 60 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. Light south southwest wind.

    Low: 36 °F

    Mostly Cloudy

  • Thursday

    Thursday: Patchy fog between 8am and 11am. Otherwise, mostly sunny, with a high near 56. Calm wind.

    High: 56 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 53. Calm wind.

    High: 53 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy
    then Patchy
    Fog

  • 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: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 60. Light and variable wind.
Tonight
Mostly cloudy, with a low around 36. Light south southwest wind.
Thursday
Patchy fog between 8am and 11am. Otherwise, mostly sunny, with a high near 56. Calm wind.
Thursday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 36. Calm wind.
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 53. Calm wind.
Friday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 28.
Saturday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 49.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Partly sunny, with a high near 48.
Sunday Night
Mostly cloudy, with a low around 31.
Monday
A 30 percent chance of rain. Mostly cloudy, with a high near 48.
Monday Night
Rain likely. Mostly cloudy, with a low around 37. Chance of precipitation is 60%.
Tuesday
A 50 percent chance of rain. Partly sunny, with a high near 54.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ontario Municipal OR
 44.03°N 117°W (Elev. 2139 ft)
Last Update:
2:04 am MST Dec 10, 2025
Forecast Valid:
1pm MST Dec 10, 2025-6pm MST Dec 16, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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