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 84%
Wind Speed SW 1 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility 1.24 mi
Last update 20 Jan 03:00 AM PST
Extended Forecast for

5 Miles SSE Wallace ID

Air Stagnation Advisory January 20, 03:21am until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 20, 03:21am until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Overnight

    Low: 22 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 32. Calm wind.

    High: 32 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 20. Calm wind.

    Low: 20 °F

    Mostly Clear

  • Wednesday

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

    High: 29 °F

    Partly Sunny

  • Wednesday Night

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

    Low: 20 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 29.

    High: 29 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 26.

    High: 26 °F

    Mostly Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a low around 22. Calm wind.
Tuesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 32. Calm wind.
Tuesday Night
Mostly clear, with a low around 20. Calm wind.
Wednesday
Partly sunny, with a high near 29. Calm wind.
Wednesday Night
Mostly cloudy, with a low around 20. Calm wind.
Thursday
Partly sunny, with a high near 29.
Thursday Night
Partly cloudy, with a low around 17.
Friday
Mostly sunny, with a high near 26.
Friday Night
Partly cloudy, with a low around 14.
Saturday
A 20 percent chance of snow before 4pm. Mostly sunny, with a high near 27.
Saturday Night
A 20 percent chance of snow. Partly cloudy, with a low around 17.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 31.
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 32. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Wallace ID
 47.41°N 115.86°W (Elev. 4596 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

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database