National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

Teton River (TRFM)

Lat: 47.90056°NLon: 112.15972°WElev: 3854.0ft.

NA

24°F

-4°C

Humidity 96%
Wind Speed NNW 2 MPH
Barometer NA
Dewpoint 24°F (-4°C)
Visibility NA
Last update 25 Dec 05:30 AM MST
Extended Forecast for

Choteau MT

Winter Weather Advisory December 25, 06:13am until December 25, 09:00am
Click here for hazard details and duration
...
  •  
    Winter Weather Advisory December 25, 06:13am until December 25, 09:00am

    NOW until 9:00am Thu

    Winter Weather Advisory

  • Christmas Day

    High: 49 °F

    Chance
    Rain/Freezing
    Rain and
    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 30. South southwest wind 7 to 9 mph.

    Low: 30 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of rain and snow after 11am. Partly sunny, with a high near 47. South southwest wind 8 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 47 °F

    Slight Chance
    Rain/Snow

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 4. Southwest wind 10 to 13 mph, with gusts as high as 22 mph. New snow accumulation of less than a half inch possible.

    Low: 4 °F

    Chance Snow

  • Saturday

    Saturday: A 40 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 24. North wind 14 to 16 mph, with gusts as high as 25 mph. New snow accumulation of less than a half inch possible.

    High: 24 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 0. North northwest wind 5 to 9 mph becoming calm in the evening.

    Low: 0 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 32. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 32 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 19. Southwest wind around 9 mph.

    Low: 19 °F

    Partly Cloudy

Detailed Forecast

Christmas Day
A chance of freezing rain before 7am, then a slight chance of rain between 7am and 8am. Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 49. Light south southwest wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 30%.
Tonight
Partly cloudy, with a low around 30. South southwest wind 7 to 9 mph.
Friday
A slight chance of rain and snow after 11am. Partly sunny, with a high near 47. South southwest wind 8 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Friday Night
A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 4. Southwest wind 10 to 13 mph, with gusts as high as 22 mph. New snow accumulation of less than a half inch possible.
Saturday
A 40 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 24. North wind 14 to 16 mph, with gusts as high as 25 mph. New snow accumulation of less than a half inch possible.
Saturday Night
Partly cloudy, with a low around 0. North northwest wind 5 to 9 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 32. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 19. Southwest wind around 9 mph.
Monday
Partly sunny, with a high near 43.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
Mostly cloudy, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
Mostly cloudy, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Choteau MT
 47.82°N 112.18°W (Elev. 3829 ft)
Last Update:
5:07 am MST Dec 25, 2025
Forecast Valid:
6am MST Dec 25, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation