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

29°F

-2°C

Humidity 86%
Wind Speed SW 4 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility 1.24 mi
Wind Chill25°F (-4°C)
Last update 18 Jan 06:15 PM PST
Extended Forecast for

5 Miles SSE Wallace ID

Air Stagnation Advisory January 18, 06:35pm until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 18, 06:35pm until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Tonight

    Low: 21 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 33. Calm wind.

    High: 33 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 23. Calm wind.

    Low: 23 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 33. Calm wind.

    High: 33 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 20. Calm wind.

    Low: 20 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow after 10am.  Partly sunny, with a high near 32.

    High: 32 °F

    Slight Chance
    Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 21. Calm wind.
M.L.King Day
Mostly sunny, with a high near 33. Calm wind.
Monday Night
Mostly cloudy, with a low around 23. Calm wind.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 33. Calm wind.
Tuesday Night
Partly cloudy, with a low around 20. Calm wind.
Wednesday
Mostly sunny, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
A 20 percent chance of snow after 10am. Partly sunny, with a high near 32.
Thursday Night
Snow likely, mainly after 4am. Mostly cloudy, with a low around 24. Chance of precipitation is 60%.
Friday
Snow likely, mainly after 4pm. Mostly cloudy, with a high near 27. Chance of precipitation is 60%.
Friday Night
Snow likely. Mostly cloudy, with a low around 14. Chance of precipitation is 60%.
Saturday
Snow likely. Mostly cloudy, with a high near 21. Chance of precipitation is 70%.
Saturday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 16.
Sunday
Snow likely. Mostly cloudy, with a high near 27. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Wallace ID
 47.41°N 115.86°W (Elev. 4596 ft)
3:07 pm PST Jan 18, 2026
6pm PST Jan 18, 2026-6pm PST Jan 25, 2026
 
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Additional Resources

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Hourly Weather Forecast

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