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

8 Miles SSW Wallace ID

Air Stagnation Advisory January 18, 06:34pm until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 18, 06:34pm 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: Sunny, with a high near 30. West wind around 6 mph.

    High: 30 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 22. South wind around 7 mph.

    Low: 22 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 31. East wind around 6 mph becoming west in the afternoon.

    High: 31 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 19. Southwest wind around 6 mph becoming southeast after midnight.

    Low: 19 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 10 percent chance of snow after 4pm.  Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny
    then Slight
    Chance Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 21. Northeast wind around 7 mph.
M.L.King Day
Sunny, with a high near 30. West wind around 6 mph.
Monday Night
Mostly cloudy, with a low around 22. South wind around 7 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 31. East wind around 6 mph becoming west in the afternoon.
Tuesday Night
Partly cloudy, with a low around 19. Southwest wind around 6 mph becoming southeast after midnight.
Wednesday
Mostly sunny, with a high near 31.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
A 10 percent chance of snow after 4pm. Partly sunny, with a high near 30.
Thursday Night
Snow likely, mainly after 4am. Mostly cloudy, with a low around 23. Chance of precipitation is 60%.
Friday
Snow likely, mainly after 4pm. Mostly cloudy, with a high near 24. Chance of precipitation is 60%.
Friday Night
Snow likely. Mostly cloudy, with a low around 13. Chance of precipitation is 60%.
Saturday
Snow likely. Mostly cloudy, with a high near 19. Chance of precipitation is 70%.
Saturday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 15.
Sunday
Snow likely. Mostly cloudy, with a high near 26. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles SSW Wallace ID
 47.35°N 115.98°W (Elev. 5272 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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