Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

OR7 SB at Sumpter MP 25.07 (OD128)

Lat: 44.71702°NLon: 118.16314°WElev: 4245.0ft.

NA

39°F

4°C

Humidity 92%
Wind Speed NE 0 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 08 Dec 09:31 PM PST
Extended Forecast for

3 Miles WNW Sumpter OR

  • Tonight

    Tonight: Rain.  Low around 39. West wind 7 to 9 mph.  Chance of precipitation is 80%.

    Low: 39 °F

    Rain

  • Tuesday

    Tuesday: Rain before 1pm, then rain and snow.  High near 44. West northwest wind 5 to 8 mph becoming calm  in the afternoon.  Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 44 °F

    Rain then
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain and snow, becoming all rain after 7pm.  Low around 38. Calm wind becoming west around 5 mph in the evening.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 38 °F

    Rain/Snow
    then Rain
    Likely

  • Wednesday

    Wednesday: Rain likely, mainly before 10am.  Mostly cloudy, with a high near 49. West wind 6 to 8 mph.  Chance of precipitation is 60%.

    High: 49 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain.  Mostly cloudy, with a low around 38. West wind around 6 mph.

    Low: 38 °F

    Chance Rain

  • Thursday

    Thursday: A 30 percent chance of rain, mainly before 10am.  Partly sunny, with a high near 49.

    High: 49 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 10pm.  Mostly cloudy, with a low around 37.

    Low: 37 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Friday Night

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

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
Rain. Low around 39. West wind 7 to 9 mph. Chance of precipitation is 80%.
Tuesday
Rain before 1pm, then rain and snow. High near 44. West northwest wind 5 to 8 mph becoming calm in the afternoon. Chance of precipitation is 100%. Little or no snow accumulation expected.
Tuesday Night
Rain and snow, becoming all rain after 7pm. Low around 38. Calm wind becoming west around 5 mph in the evening. Chance of precipitation is 90%. Little or no snow accumulation expected.
Wednesday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 49. West wind 6 to 8 mph. Chance of precipitation is 60%.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 38. West wind around 6 mph.
Thursday
A 30 percent chance of rain, mainly before 10am. Partly sunny, with a high near 49.
Thursday Night
A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 37.
Friday
Mostly sunny, with a high near 50.
Friday Night
Partly cloudy, with a low around 32.
Saturday
Mostly sunny, with a high near 48.
Saturday Night
Mostly cloudy, with a low around 32.
Sunday
A chance of rain and snow. Snow level 5800 feet. Partly sunny, with a high near 44. Chance of precipitation is 30%.
Sunday Night
A chance of rain and snow. Snow level 5700 feet. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Monday
A chance of rain and snow. Snow level 5400 feet rising to 6300 feet in the afternoon. Mostly cloudy, with a high near 44. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Sumpter OR
 44.77°N 118.24°W (Elev. 4843 ft)
1:05 pm PST Dec 8, 2025
9pm PST Dec 8, 2025-6pm PST Dec 15, 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