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 >

Current conditions at

YELLOW MULE (YLWM8)

Lat: 45.1661°NLon: 111.35954°WElev: 9200.0ft.

NA

34°F

1°C

Humidity 92%
Wind Speed S 30 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Wind Chill20°F (-7°C)
Last update 25 Dec 03:04 AM MST
Extended Forecast for

19 Miles S Big Sky MT

  • Overnight

    Overnight: Snow. Low around 29. Breezy, with a south southwest wind around 25 mph, with gusts as high as 41 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 3 to 5 inches possible.

    Low: 29 °F

    Snow and
    Breezy

  • Christmas Day

    Christmas Day: Snow likely, mainly before 1pm. Mostly cloudy, with a temperature falling to around 26 by 5pm. Breezy, with a south southwest wind 18 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    High: 31 °F⇓

    Snow Likely
    and Breezy
    then Chance
    Snow

  • Thursday Night

    Thursday Night: Snow. Low around 25. Breezy, with a south southwest wind 18 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    Low: 25 °F

    Snow and
    Breezy

  • Friday

    Friday: Snow. High near 26. Breezy, with a south southwest wind 24 to 26 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    High: 26 °F

    Snow and
    Breezy

  • Friday Night

    Friday Night: Snow likely, mainly after 11pm. Mostly cloudy, with a low around 13. Breezy, with a south southwest wind 23 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    Low: 13 °F

    Snow Likely
    and Breezy

  • Saturday

    Saturday: Snow. High near 17. Breezy, with a southwest wind 15 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 17 °F

    Snow and
    Breezy

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before 11pm. Partly cloudy, with a low around -4. Northwest wind 7 to 13 mph, with gusts as high as 22 mph.

    Low: -4 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 12. Southwest wind around 7 mph.

    High: 12 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 2.

    Low: 2 °F

    Partly Cloudy

Detailed Forecast

Overnight
Snow. Low around 29. Breezy, with a south southwest wind around 25 mph, with gusts as high as 41 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 3 to 5 inches possible.
Christmas Day
Snow likely, mainly before 1pm. Mostly cloudy, with a temperature falling to around 26 by 5pm. Breezy, with a south southwest wind 18 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Thursday Night
Snow. Low around 25. Breezy, with a south southwest wind 18 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Friday
Snow. High near 26. Breezy, with a south southwest wind 24 to 26 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Friday Night
Snow likely, mainly after 11pm. Mostly cloudy, with a low around 13. Breezy, with a south southwest wind 23 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Saturday
Snow. High near 17. Breezy, with a southwest wind 15 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Saturday Night
A 20 percent chance of snow before 11pm. Partly cloudy, with a low around -4. Northwest wind 7 to 13 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 12. Southwest wind around 7 mph.
Sunday Night
Partly cloudy, with a low around 2.
Monday
Sunny, with a high near 18.
Monday Night
Mostly cloudy, with a low around 9.
Tuesday
Partly sunny, with a high near 24.
Tuesday Night
Mostly cloudy, with a low around 15.
Wednesday
Partly sunny, with a high near 26.
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ABOUT THIS FORECAST

 
Point Forecast:
19 Miles S Big Sky MT
 44.98°N 111.3°W (Elev. 8599 ft)
Last Update:
2:11 am MST Dec 25, 2025
Forecast Valid:
4am MST Dec 25, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation