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

30°F

-1°C

Humidity 76%
Wind Speed NNW 1 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility NA
Last update 20 Jan 05:01 AM PST
Extended Forecast for

3 Miles WSW Mazama WA

Air Stagnation Advisory January 20, 06:03am until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 20, 06:03am until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Today

    High: 39 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 23. Northwest wind 3 to 5 mph.

    Low: 23 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 35. Light and variable wind.

    High: 35 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 23. Light northwest wind.

    Low: 23 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 34. Calm wind.

    High: 34 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 34.

    High: 34 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 39. Northwest wind 5 to 7 mph becoming calm in the morning.
Tonight
Mostly clear, with a low around 23. Northwest wind 3 to 5 mph.
Wednesday
Sunny, with a high near 35. Light and variable wind.
Wednesday Night
Partly cloudy, with a low around 23. Light northwest wind.
Thursday
Mostly sunny, with a high near 34. Calm wind.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Sunny, with a high near 34.
Friday Night
Mostly clear, with a low around 19.
Saturday
Sunny, with a high near 35.
Saturday Night
A 20 percent chance of snow after 10pm. Partly cloudy, with a low around 22.
Sunday
A 40 percent chance of snow. Partly sunny, with a high near 33.
Sunday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 27.
Monday
A chance of rain and snow. Partly sunny, with a high near 36. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Mazama WA
 48.61°N 120.51°W (Elev. 3356 ft)
1:12 am PST Jan 20, 2026
6am 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