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

STEHEKIN-AIRSTRIP (STRW1)

Lat: 48.34694°NLon: 120.72028°WElev: 1230.0ft.

NA

31°F

-1°C

Humidity 77%
Wind Speed NNW 2 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Last update 20 Jan 03:01 AM PST
Extended Forecast for

21 Miles NW Mazama WA

Air Stagnation Advisory January 20, 03:48am until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 20, 03:48am until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Overnight

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 32. Northeast wind 6 to 9 mph.

    High: 32 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 21. Northeast wind around 8 mph.

    Low: 21 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 34. Northeast wind 5 to 8 mph becoming calm  in the afternoon.

    High: 34 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 20. South wind around 6 mph.

    Low: 20 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 27.

    High: 27 °F

    Sunny

Detailed Forecast

Overnight
Partly cloudy, with a low around 24. North wind around 10 mph.
Tuesday
Sunny, with a high near 32. Northeast wind 6 to 9 mph.
Tuesday Night
Mostly clear, with a low around 21. Northeast wind around 8 mph.
Wednesday
Mostly sunny, with a high near 34. Northeast wind 5 to 8 mph becoming calm in the afternoon.
Wednesday Night
Partly cloudy, with a low around 20. South wind around 6 mph.
Thursday
Partly sunny, with a high near 31.
Thursday Night
Partly cloudy, with a low around 16.
Friday
Sunny, with a high near 27.
Friday Night
Mostly clear, with a low around 14.
Saturday
Mostly sunny, with a high near 29.
Saturday Night
A 20 percent chance of snow. Partly cloudy, with a low around 19.
Sunday
A 40 percent chance of snow. Partly sunny, with a high near 29.
Sunday Night
Snow likely. Mostly cloudy, with a low around 23. Chance of precipitation is 60%.
Monday
A 50 percent chance of snow. Partly sunny, with a high near 30.
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ABOUT THIS FORECAST

 
Point Forecast:
21 Miles NW Mazama WA
 48.83°N 120.74°W (Elev. 6033 ft)
1:12 am PST Jan 20, 2026
3am 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