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

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

OROVILLE (OVLW1)

Lat: 48.96311°NLon: 119.49161°WElev: 1450.0ft.

NA

46°F

8°C

Humidity 54%
Wind Speed E 5 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 09 Dec 04:41 PM PST
Extended Forecast for

24 Miles NNE Mazama WA

  • This Afternoon

    This Afternoon: Snow likely. The snow could be heavy at times. Mostly cloudy, with a high near 22. Southwest wind around 10 mph. Chance of precipitation is 70%. Total daytime snow accumulation of around an inch possible.

    High: 22 °F

    Heavy Snow

  • Tonight

    Tonight: Snow. The snow could be heavy at times. Temperature rising to around 31 by 4am. Windy, with a southwest wind 18 to 26 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.

    Low: 21 °F⇑

    Heavy Snow
    and Windy

  • Wednesday

    Wednesday: Snow. The snow could be heavy at times. High near 32. Breezy, with a west wind around 21 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.

    High: 32 °F

    Heavy Snow
    and Breezy

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times. Low around 22. Windy, with a west wind 16 to 21 mph increasing to 24 to 29 mph after midnight. Winds could gust as high as 47 mph. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.

    Low: 22 °F

    Heavy Snow
    and Windy

  • Thursday

    Thursday: Snow likely, mainly before 10am. Mostly cloudy, with a high near 24. Breezy, with a west wind 15 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 24 °F

    Snow Likely
    and Breezy

  • Thursday Night

    Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 21. New snow accumulation of less than a half inch possible.

    Low: 21 °F

    Chance Snow

  • Friday

    Friday: Snow likely. Mostly cloudy, with a high near 27. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 27 °F

    Snow Likely

  • Friday Night

    Friday Night: Snow likely, mainly before 10pm. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.

    Low: 21 °F

    Snow Likely
    then Chance
    Snow

  • Saturday

    Saturday: A 30 percent chance of snow. Mostly cloudy, with a high near 24.

    High: 24 °F

    Chance Snow

Detailed Forecast

This Afternoon
Snow likely. The snow could be heavy at times. Mostly cloudy, with a high near 22. Southwest wind around 10 mph. Chance of precipitation is 70%. Total daytime snow accumulation of around an inch possible.
Tonight
Snow. The snow could be heavy at times. Temperature rising to around 31 by 4am. Windy, with a southwest wind 18 to 26 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.
Wednesday
Snow. The snow could be heavy at times. High near 32. Breezy, with a west wind around 21 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.
Wednesday Night
Snow. The snow could be heavy at times. Low around 22. Windy, with a west wind 16 to 21 mph increasing to 24 to 29 mph after midnight. Winds could gust as high as 47 mph. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.
Thursday
Snow likely, mainly before 10am. Mostly cloudy, with a high near 24. Breezy, with a west wind 15 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 21. New snow accumulation of less than a half inch possible.
Friday
Snow likely. Mostly cloudy, with a high near 27. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.
Saturday
A 30 percent chance of snow. Mostly cloudy, with a high near 24.
Saturday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 22. Breezy.
Sunday
Snow likely. Mostly cloudy, with a high near 23. Breezy. Chance of precipitation is 60%.
Sunday Night
Snow likely. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.
Monday
Snow. The snow could be heavy at times. High near 25. Breezy. Chance of precipitation is 80%.
Monday Night
Snow. The snow could be heavy at times. Low around 21. Breezy. Chance of precipitation is 90%.
Tuesday
Snow likely. Mostly cloudy, with a high near 23. Breezy. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
24 Miles NNE Mazama WA
 48.92°N 120.19°W (Elev. 7779 ft)
Last Update:
3:08 pm PST Dec 9, 2025
Forecast Valid:
5pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation