Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Overcast

43°F

6°C

Humidity 75%
Wind Speed NNE 3 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 07 Dec 03:20 PM MST
Extended Forecast for

35 Miles SSE Unity OR

  • This Afternoon

    This Afternoon: A 30 percent chance of rain.  Snow level 6500 feet. Mostly cloudy, with a high near 41. West southwest wind around 16 mph, with gusts as high as 25 mph.

    High: 41 °F

    Chance Rain

  • Tonight

    Tonight: A 20 percent chance of rain before 11pm.  Snow level 6900 feet lowering to 6100 feet after midnight . Mostly cloudy, with a low around 35. West southwest wind 14 to 16 mph.

    Low: 35 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of rain, mainly after 11am.  Snow level 6100 feet rising to 7500 feet in the afternoon. Mostly cloudy, with a high near 43. Breezy, with a southwest wind 13 to 20 mph, with gusts as high as 30 mph.

    High: 43 °F

    Chance Rain
    and Breezy

  • Monday Night

    Monday Night: A 30 percent chance of rain, mainly before 11pm.  Mostly cloudy, with a low around 41. Breezy, with a west southwest wind 21 to 25 mph, with gusts as high as 36 mph.

    Low: 41 °F

    Chance Rain
    and Breezy

  • Tuesday

    Tuesday: Rain likely, mainly after 11am.  Mostly cloudy, with a high near 46. Breezy, with a west southwest wind 18 to 25 mph, with gusts as high as 36 mph.  Chance of precipitation is 60%.

    High: 46 °F

    Rain Likely
    and Breezy

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 11pm.  Mostly cloudy, with a low around 45. Breezy.  Chance of precipitation is 60%.

    Low: 45 °F

    Rain Likely
    and Breezy

  • Wednesday

    Wednesday: Rain likely, mainly before 11am.  Mostly cloudy, with a high near 50. Windy.  Chance of precipitation is 60%.

    High: 50 °F

    Rain Likely
    and Windy

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain.  Mostly cloudy, with a low around 45. Breezy.

    Low: 45 °F

    Chance Rain
    and Breezy

  • Thursday

    Thursday: A 30 percent chance of rain, mainly before 11am.  Partly sunny, with a high near 50.

    High: 50 °F

    Chance Rain

Detailed Forecast

This Afternoon
A 30 percent chance of rain. Snow level 6500 feet. Mostly cloudy, with a high near 41. West southwest wind around 16 mph, with gusts as high as 25 mph.
Tonight
A 20 percent chance of rain before 11pm. Snow level 6900 feet lowering to 6100 feet after midnight . Mostly cloudy, with a low around 35. West southwest wind 14 to 16 mph.
Monday
A 30 percent chance of rain, mainly after 11am. Snow level 6100 feet rising to 7500 feet in the afternoon. Mostly cloudy, with a high near 43. Breezy, with a southwest wind 13 to 20 mph, with gusts as high as 30 mph.
Monday Night
A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 41. Breezy, with a west southwest wind 21 to 25 mph, with gusts as high as 36 mph.
Tuesday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 46. Breezy, with a west southwest wind 18 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 60%.
Tuesday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 45. Breezy. Chance of precipitation is 60%.
Wednesday
Rain likely, mainly before 11am. Mostly cloudy, with a high near 50. Windy. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 45. Breezy.
Thursday
A 30 percent chance of rain, mainly before 11am. Partly sunny, with a high near 50.
Thursday Night
Partly cloudy, with a low around 37.
Friday
Mostly sunny, with a high near 48.
Friday Night
Partly cloudy, with a low around 33.
Saturday
Mostly sunny, with a high near 44.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
A slight chance of rain and snow. Snow level 5800 feet. Mostly sunny, with a high near 43.
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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 7, 2025
3pm MST Dec 7, 2025-6pm MST Dec 14, 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