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

Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

OROVILLE (OVLW1)

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

NA

21°F

-6°C

Humidity 47%
Wind Speed N 3 MPH
Barometer NA
Dewpoint 4°F (-16°C)
Visibility NA
Last update 27 Dec 09:41 PM PST
Extended Forecast for

28 Miles NNE Mazama WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 0. Wind chill values as low as -11. Northwest wind 6 to 8 mph.

    Low: 0 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 10 percent chance of snow after 4pm. Partly sunny, with a high near 20. Wind chill values as low as -7. West wind around 6 mph.

    High: 20 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before 10pm. Mostly cloudy, with a steady temperature around 16. Southwest wind around 7 mph.

    Low: 16 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 26. Southwest wind around 6 mph.

    High: 26 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 17. West wind around 7 mph.

    Low: 17 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 27.

    High: 27 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 28.

    High: 28 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow after 10pm. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Slight Chance
    Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 0. Wind chill values as low as -11. Northwest wind 6 to 8 mph.
Sunday
A 10 percent chance of snow after 4pm. Partly sunny, with a high near 20. Wind chill values as low as -7. West wind around 6 mph.
Sunday Night
A 20 percent chance of snow before 10pm. Mostly cloudy, with a steady temperature around 16. Southwest wind around 7 mph.
Monday
Mostly cloudy, with a high near 26. Southwest wind around 6 mph.
Monday Night
Mostly cloudy, with a low around 17. West wind around 7 mph.
Tuesday
Mostly cloudy, with a high near 27.
Tuesday Night
Mostly cloudy, with a low around 20.
Wednesday
Mostly cloudy, with a high near 28.
Wednesday Night
A 20 percent chance of snow after 10pm. Mostly cloudy, with a low around 20.
New Year's Day
A 30 percent chance of snow, mainly after 10am. Mostly cloudy, with a high near 25.
Thursday Night
Snow likely. Mostly cloudy, with a low around 15. Chance of precipitation is 60%.
Friday
Snow likely. Mostly cloudy, with a high near 19. Chance of precipitation is 60%.
Friday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 10.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 18.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
28 Miles NNE Mazama WA
 48.98°N 120.2°W (Elev. 7188 ft)
Last Update:
9:03 pm PST Dec 27, 2025
Forecast Valid:
10pm PST Dec 27, 2025-6pm PST Jan 3, 2026
 
Forecast Discussion
 
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Additional Resources

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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