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

BOORMAN (BOOM8)

Lat: 48.14389°NLon: 114.71806°WElev: 3963.0ft.

NA

41°F

5°C

Humidity 97%
Wind Speed WNW 0 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 25 Dec 01:15 PM MST
Extended Forecast for

11 Miles ESE Happys Inn MT

Winter Weather Advisory December 26, 12:00pm until December 27, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Christmas Day

    Christmas Day: A chance of rain and snow, mainly after 4pm. Snow level 5900 feet. Mostly cloudy, with a high near 36. South southwest wind around 7 mph. Chance of precipitation is 40%. Total daytime snow accumulation of less than a half inch possible.

    High: 36 °F

    Chance
    Rain/Snow

  • Tonight

    Tonight: Rain and snow likely before 4am, then a slight chance of snow between 4am and 5am. Mostly cloudy, with a low around 28. South southwest wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 28 °F

    Rain/Snow
    Likely then
    Slight Chance
    Snow

  • Friday

    Friday: Snow, mainly before 4pm. The snow could be heavy at times. High near 29. South wind 6 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    High: 29 °F

    Heavy Snow

  • Friday Night

    Friday Night: Snow. Patchy blowing snow. Low around 17. Breezy, with a west southwest wind 17 to 24 mph, with gusts as high as 44 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 17 °F

    Snow and
    Patchy
    Blowing Snow

  • Saturday

    Saturday: A 40 percent chance of snow, mainly before 11am. Patchy blowing snow before 11am. Mostly cloudy, with a high near 18. Breezy, with a west wind 18 to 23 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 32 mph. New snow accumulation of less than a half inch possible.

    High: 18 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 6.

    Low: 6 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 16.

    High: 16 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 11.

    Low: 11 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 22.

    High: 22 °F

    Mostly Cloudy

Detailed Forecast

Christmas Day
A chance of rain and snow, mainly after 4pm. Snow level 5900 feet. Mostly cloudy, with a high near 36. South southwest wind around 7 mph. Chance of precipitation is 40%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Rain and snow likely before 4am, then a slight chance of snow between 4am and 5am. Mostly cloudy, with a low around 28. South southwest wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday
Snow, mainly before 4pm. The snow could be heavy at times. High near 29. South wind 6 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Friday Night
Snow. Patchy blowing snow. Low around 17. Breezy, with a west southwest wind 17 to 24 mph, with gusts as high as 44 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Saturday
A 40 percent chance of snow, mainly before 11am. Patchy blowing snow before 11am. Mostly cloudy, with a high near 18. Breezy, with a west wind 18 to 23 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 32 mph. New snow accumulation of less than a half inch possible.
Saturday Night
Partly cloudy, with a low around 6.
Sunday
Partly sunny, with a high near 16.
Sunday Night
Mostly cloudy, with a low around 11.
Monday
Mostly cloudy, with a high near 22.
Monday Night
Mostly cloudy, with a low around 17.
Tuesday
Mostly cloudy, with a high near 26.
Tuesday Night
Mostly cloudy, with a low around 21.
Wednesday
A slight chance of snow. Mostly cloudy, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles ESE Happys Inn MT
 47.99°N 114.92°W (Elev. 5564 ft)
Last Update:
1:01 pm MST Dec 25, 2025
Forecast Valid:
2pm MST Dec 25, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation