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

Wallace Viaduct (ITD90)

Lat: 47.47432°NLon: 115.90816°WElev: 2792.0ft.

NA

27°F

-3°C

Humidity 85%
Wind Speed SW 2 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility 1.24 mi
Last update 20 Jan 04:30 AM PST
Extended Forecast for

7 Miles S Wallace ID

Air Stagnation Advisory January 20, 04:54am until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 20, 04:54am until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Today

    High: 30 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 19. Light south wind.

    Low: 19 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 29. Light northeast wind.

    High: 29 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 20. Light east wind.

    Low: 20 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 28. Light east wind.

    High: 28 °F

    Partly Sunny

  • Thursday Night

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

    Low: 16 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 14.

    Low: 14 °F

    Mostly Clear

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 30. Light and variable wind.
Tonight
Mostly clear, with a low around 19. Light south wind.
Wednesday
Partly sunny, with a high near 29. Light northeast wind.
Wednesday Night
Mostly cloudy, with a low around 20. Light east wind.
Thursday
Partly sunny, with a high near 28. Light east wind.
Thursday Night
Partly cloudy, with a low around 16.
Friday
Mostly sunny, with a high near 25.
Friday Night
Mostly clear, with a low around 14.
Saturday
A 20 percent chance of snow before 4pm. Mostly sunny, with a high near 26.
Saturday Night
A 20 percent chance of snow after 10pm. Partly cloudy, with a low around 17.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 30.
Sunday Night
Snow likely. Mostly cloudy, with a low around 24. Chance of precipitation is 60%.
Monday
Snow likely. Mostly cloudy, with a high near 31. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles S Wallace ID
 47.38°N 115.92°W (Elev. 4987 ft)
1:12 am PST Jan 20, 2026
4am 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