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

30°F

-1°C

Humidity 84%
Wind Speed SE 1 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 20 Jan 01:41 AM PST
Extended Forecast for

28 Miles NNE Mazama WA

Air Stagnation Advisory January 20, 02:38am until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 20, 02:38am until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Overnight

    Low: 20 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 28. North wind 6 to 10 mph.

    High: 28 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 17. Northwest wind 6 to 8 mph.

    Low: 17 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 30. West wind around 7 mph.

    High: 30 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 16. West wind around 6 mph.

    Low: 16 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 10.

    Low: 10 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 21.

    High: 21 °F

    Sunny

Detailed Forecast

Overnight
Partly cloudy, with a low around 20. Northwest wind around 14 mph, with gusts as high as 22 mph.
Tuesday
Sunny, with a high near 28. North wind 6 to 10 mph.
Tuesday Night
Mostly clear, with a low around 17. Northwest wind 6 to 8 mph.
Wednesday
Partly sunny, with a high near 30. West wind around 7 mph.
Wednesday Night
Mostly cloudy, with a low around 16. West wind around 6 mph.
Thursday
Partly sunny, with a high near 26.
Thursday Night
Partly cloudy, with a low around 10.
Friday
Sunny, with a high near 21.
Friday Night
Mostly clear, with a low around 9.
Saturday
Mostly sunny, with a high near 25.
Saturday Night
A 10 percent chance of snow. Partly cloudy, with a low around 13.
Sunday
A 30 percent chance of snow. Mostly cloudy, 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. Mostly cloudy, with a high near 25.
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ABOUT THIS FORECAST

 
Point Forecast:
28 Miles NNE Mazama WA
 48.98°N 120.2°W (Elev. 7188 ft)
1:12 am PST Jan 20, 2026
2am 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