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

Sioux Pass MT-16 MP 21 (MTSOO)

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

NA

11°F

-12°C

Humidity 89%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 8°F (-13°C)
Visibility NA
Last update 20 Jan 12:45 AM MST
Extended Forecast for

Culbertson MT

  • Overnight

    Overnight: A 40 percent chance of snow, mainly after 3am.  Cloudy, with a low around 4. Calm wind.  Total nighttime snow accumulation of less than a half inch possible.

    Low: 4 °F

    Chance Snow

  • Tuesday

    Tuesday: Snow likely, mainly before 9am.  Patchy blowing snow between 11am and 4pm. Cloudy, with a high near 19. Wind chill values between zero and 5. Blustery, with an east northeast wind 6 to 11 mph becoming northwest 17 to 22 mph in the morning. Winds could gust as high as 33 mph.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 19 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow after 11pm.  Patchy blowing snow after 2am. Cloudy, with a low around 10. Wind chill values between -5 and 5. West wind 14 to 20 mph, with gusts as high as 33 mph.  New snow accumulation of less than one inch possible.

    Low: 10 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Wednesday

    Wednesday: Patchy blowing snow. Mostly cloudy, with a high near 21. Wind chill values between -5 and -10. Blustery, with a west northwest wind 22 to 25 mph, with gusts as high as 40 mph.

    High: 21 °F

    Patchy
    Blowing Snow
    and Blustery

  • Wednesday Night

    Wednesday Night: Cloudy, with a low around -2. West northwest wind 8 to 14 mph, with gusts as high as 24 mph.

    Low: -2 °F

    Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 3. North northwest wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 3 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around -22. North northwest wind 5 to 8 mph becoming calm  in the evening.

    Low: -22 °F

    Mostly Clear

  • Friday

    Friday: Sunny and cold, with a high near -4. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: -4 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -17. South wind 3 to 5 mph.

    Low: -17 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 40 percent chance of snow, mainly after 3am. Cloudy, with a low around 4. Calm wind. Total nighttime snow accumulation of less than a half inch possible.
Tuesday
Snow likely, mainly before 9am. Patchy blowing snow between 11am and 4pm. Cloudy, with a high near 19. Wind chill values between zero and 5. Blustery, with an east northeast wind 6 to 11 mph becoming northwest 17 to 22 mph in the morning. Winds could gust as high as 33 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Tuesday Night
A 50 percent chance of snow after 11pm. Patchy blowing snow after 2am. Cloudy, with a low around 10. Wind chill values between -5 and 5. West wind 14 to 20 mph, with gusts as high as 33 mph. New snow accumulation of less than one inch possible.
Wednesday
Patchy blowing snow. Mostly cloudy, with a high near 21. Wind chill values between -5 and -10. Blustery, with a west northwest wind 22 to 25 mph, with gusts as high as 40 mph.
Wednesday Night
Cloudy, with a low around -2. West northwest wind 8 to 14 mph, with gusts as high as 24 mph.
Thursday
Mostly cloudy, with a high near 3. North northwest wind 8 to 11 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around -22. North northwest wind 5 to 8 mph becoming calm in the evening.
Friday
Sunny and cold, with a high near -4. Calm wind becoming south southwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around -17. South wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 7. Light and variable wind becoming northwest 5 to 7 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around -6. Southeast wind around 7 mph becoming southwest after midnight.
Sunday
Partly sunny, with a high near 18.
Sunday Night
Mostly cloudy, with a low around 2.
Monday
A slight chance of snow. Partly sunny, with a high near 19.
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ABOUT THIS FORECAST

 
Point Forecast:
Culbertson MT
 48.14°N 104.51°W (Elev. 1919 ft)
1:32 pm MST Jan 19, 2026
1am MST Jan 20, 2026-6pm MST 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