Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

OROVILLE (OVLW1)

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

NA

31°F

-1°C

Humidity 74%
Wind Speed NW 2 MPH
Barometer NA
Dewpoint 24°F (-4°C)
Visibility NA
Last update 20 Jan 04:41 AM PST
Extended Forecast for

24 Miles NNE Mazama WA

Air Stagnation Advisory January 20, 05:07am until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 20, 05:07am until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Today

    High: 29 °F

    Sunny and
    Blustery then
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 20. Northwest wind 9 to 13 mph.

    Low: 20 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 30. West wind 6 to 11 mph.

    High: 30 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 17. West wind 7 to 9 mph.

    Low: 17 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 26. West wind 7 to 9 mph.

    High: 26 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 21.

    High: 21 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 10.

    Low: 10 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 29. Blustery, with a north wind 16 to 21 mph decreasing to 7 to 12 mph in the afternoon.
Tonight
Mostly clear, with a low around 20. Northwest wind 9 to 13 mph.
Wednesday
Mostly sunny, with a high near 30. West wind 6 to 11 mph.
Wednesday Night
Mostly cloudy, with a low around 17. West wind 7 to 9 mph.
Thursday
Partly sunny, with a high near 26. West wind 7 to 9 mph.
Thursday Night
Partly cloudy, with a low around 12.
Friday
Sunny, with a high near 21.
Friday Night
Mostly clear, with a low around 10.
Saturday
Mostly sunny, with a high near 25.
Saturday Night
A 10 percent chance of snow after 4am. Partly cloudy, with a low around 14.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 24.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 17.
Monday
A 40 percent chance of snow. Partly sunny, with a high near 25.
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ABOUT THIS FORECAST

 
Point Forecast:
24 Miles NNE Mazama WA
 48.92°N 120.19°W (Elev. 7779 ft)
1:12 am PST Jan 20, 2026
5am PST Jan 20, 2026-6pm PST Jan 26, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database