Prolonged Extreme Cold; Eastern U.S. Winter Storm

Another Arctic blast will surge south across the northern Plains Thursday night, crossing the Midwest and reaching the Gulf Coast Friday night. Confidence continues to increase for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. Read More >

Current conditions at

Sioux Pass MT-16 MP 21 (MTSOO)

Lat: 47.91973°NLon: 104.32619°WElev: 2480.0ft.

NA

11°F

-12°C

Humidity 90%
Wind Speed E 0 MPH
Barometer NA
Dewpoint 9°F (-13°C)
Visibility NA
Last update 29 Jan 07:45 AM MST
Extended Forecast for

17 Miles NNW Lambert MT

  • Today

    Today: A 30 percent chance of snow, mainly after 4pm.  Mostly cloudy, with a high near 22. Calm wind becoming northeast around 5 mph in the afternoon.  Total daytime snow accumulation of less than a half inch possible.

    High: 22 °F

    Chance Snow

  • Tonight

    Tonight: A chance of snow before 11pm, then a slight chance of snow after 4am.  Mostly cloudy, with a low around 9. Wind chill values between zero and 5. East wind 6 to 10 mph.  Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 9 °F

    Chance Snow

  • Friday

    Friday: Cloudy, then gradually becoming mostly sunny, with a high near 23. Wind chill values between -5 and 5. Southeast wind 10 to 15 mph, with gusts as high as 22 mph.

    High: 23 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Freezing rain likely, mainly after 5am.  Increasing clouds, with a low around 17. South wind around 15 mph, with gusts as high as 22 mph.  Chance of precipitation is 60%.

    Low: 17 °F

    Freezing Rain
    Likely

  • Saturday

    Saturday: Rain or freezing rain likely, becoming all rain after 8am, then gradually ending.  Partly sunny, with a high near 40. South southwest wind 13 to 20 mph becoming west in the afternoon. Winds could gust as high as 28 mph.  Chance of precipitation is 60%.

    High: 40 °F

    Rain/Freezing
    Rain Likely
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 23. West wind 10 to 16 mph, with gusts as high as 23 mph.

    Low: 23 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 35. West northwest wind 6 to 9 mph.

    High: 35 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 21. Southeast wind 5 to 8 mph.

    Low: 21 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 37. South southeast wind 9 to 13 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 37 °F

    Partly Sunny

Detailed Forecast

Today
A 30 percent chance of snow, mainly after 4pm. Mostly cloudy, with a high near 22. Calm wind becoming northeast around 5 mph in the afternoon. Total daytime snow accumulation of less than a half inch possible.
Tonight
A chance of snow before 11pm, then a slight chance of snow after 4am. Mostly cloudy, with a low around 9. Wind chill values between zero and 5. East wind 6 to 10 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Friday
Cloudy, then gradually becoming mostly sunny, with a high near 23. Wind chill values between -5 and 5. Southeast wind 10 to 15 mph, with gusts as high as 22 mph.
Friday Night
Freezing rain likely, mainly after 5am. Increasing clouds, with a low around 17. South wind around 15 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Saturday
Rain or freezing rain likely, becoming all rain after 8am, then gradually ending. Partly sunny, with a high near 40. South southwest wind 13 to 20 mph becoming west in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 60%.
Saturday Night
Mostly cloudy, with a low around 23. West wind 10 to 16 mph, with gusts as high as 23 mph.
Sunday
Partly sunny, with a high near 35. West northwest wind 6 to 9 mph.
Sunday Night
Mostly cloudy, with a low around 21. Southeast wind 5 to 8 mph.
Monday
Partly sunny, with a high near 37. South southeast wind 9 to 13 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Monday Night
A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 18. West northwest wind around 10 mph.
Tuesday
Mostly sunny, with a high near 31. West northwest wind 9 to 13 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 17.
Wednesday
Mostly sunny, with a high near 37.
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles NNW Lambert MT
 47.92°N 104.77°W (Elev. 2234 ft)
2:31 am MST Jan 29, 2026
8am MST Jan 29, 2026-6pm MST Feb 4, 2026
 
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Additional Resources

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