Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Current conditions at

Sioux Pass MT-16 MP 21 (MTSOO)

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

NA

23°F

-5°C

Humidity 93%
Wind Speed N 0 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 24 Dec 02:30 AM MST
Extended Forecast for

Culbertson MT

  • Overnight

    Overnight: A slight chance of freezing rain before 4am.  Mostly cloudy, with a low around 13. North wind around 7 mph.  Chance of precipitation is 20%.

    Low: 13 °F

    Slight Chance
    Freezing Rain

  • Wednesday

    Wednesday: Partly sunny, with a high near 26. East northeast wind 8 to 14 mph, with gusts as high as 20 mph.

    High: 26 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of freezing rain after 5am.  Mostly cloudy, with a low around 16. East wind 11 to 14 mph, with gusts as high as 23 mph.  Chance of precipitation is 30%.

    Low: 16 °F

    Mostly Cloudy
    then Chance
    Freezing Rain

  • Christmas Day

    Christmas Day: A chance of freezing rain and sleet before 11am, then a chance of freezing rain between 11am and 2pm, then a chance of snow after 2pm.  Mostly cloudy, with a high near 27. East southeast wind 6 to 9 mph becoming north in the afternoon.  Chance of precipitation is 30%. Little or no snow and sleet accumulation expected.

    High: 27 °F

    Chance Wintry
    Mix

  • Thursday Night

    Thursday Night: A slight chance of freezing rain before 11pm.  Mostly cloudy, with a low around 15. Southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 15 °F

    Slight Chance
    Freezing Rain
    then Mostly
    Cloudy

  • Friday

    Friday: A slight chance of snow between 11am and 2pm, then a slight chance of rain after 2pm.  Partly sunny, with a high near 36. Light and variable wind becoming south around 6 mph in the morning.  Chance of precipitation is 20%.

    High: 36 °F

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Friday Night

    Friday Night: A chance of freezing rain before 2am, then a chance of snow.  Mostly cloudy, with a low around 6. Southwest wind 6 to 9 mph becoming west northwest after midnight.  Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 6 °F

    Chance
    Freezing Rain
    then Chance
    Wintry Mix

  • Saturday

    Saturday: A 30 percent chance of snow, mainly before 11am.  Partly sunny, with a high near 20. Blustery, with a northwest wind 13 to 22 mph, with gusts as high as 34 mph.

    High: 20 °F

    Chance Snow
    and Blustery

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around -10. West northwest wind 11 to 17 mph, with gusts as high as 29 mph.

    Low: -10 °F

    Partly Cloudy

Detailed Forecast

Overnight
A slight chance of freezing rain before 4am. Mostly cloudy, with a low around 13. North wind around 7 mph. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 26. East northeast wind 8 to 14 mph, with gusts as high as 20 mph.
Wednesday Night
A chance of freezing rain after 5am. Mostly cloudy, with a low around 16. East wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Christmas Day
A chance of freezing rain and sleet before 11am, then a chance of freezing rain between 11am and 2pm, then a chance of snow after 2pm. Mostly cloudy, with a high near 27. East southeast wind 6 to 9 mph becoming north in the afternoon. Chance of precipitation is 30%. Little or no snow and sleet accumulation expected.
Thursday Night
A slight chance of freezing rain before 11pm. Mostly cloudy, with a low around 15. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Friday
A slight chance of snow between 11am and 2pm, then a slight chance of rain after 2pm. Partly sunny, with a high near 36. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 20%.
Friday Night
A chance of freezing rain before 2am, then a chance of snow. Mostly cloudy, with a low around 6. Southwest wind 6 to 9 mph becoming west northwest after midnight. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday
A 30 percent chance of snow, mainly before 11am. Partly sunny, with a high near 20. Blustery, with a northwest wind 13 to 22 mph, with gusts as high as 34 mph.
Saturday Night
Partly cloudy, with a low around -10. West northwest wind 11 to 17 mph, with gusts as high as 29 mph.
Sunday
Mostly sunny, with a high near 7. West northwest wind 7 to 9 mph.
Sunday Night
Mostly cloudy, with a low around -6. Southwest wind 3 to 5 mph.
Monday
Partly sunny, with a high near 26.
Monday Night
Mostly cloudy, with a low around 14.
Tuesday
A chance of flurries. Partly sunny, with a high near 35.
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ABOUT THIS FORECAST

 
Point Forecast:
Culbertson MT
 48.14°N 104.51°W (Elev. 1919 ft)
2:08 pm MST Dec 23, 2025
2am MST Dec 24, 2025-6pm MST Dec 30, 2025
 
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