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

BIG SHEEP MOUNTAIN (LCFM8)

Lat: 47.02819°NLon: 105.80472°WElev: 3172.0ft.

NA

36°F

2°C

Humidity 83%
Wind Speed ENE 0 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 25 Dec 06:08 PM MST
Extended Forecast for

25 Miles WSW Brockway MT

  • Tonight

    Tonight: Patchy freezing fog between 10pm and midnight. Partly cloudy, with a low around 28. Calm wind becoming south around 6 mph after midnight.

    Low: 28 °F

    Patchy
    Freezing Fog
    then Mostly
    Cloudy

  • Friday

    Friday: Partly sunny, with a high near 50. South wind 7 to 10 mph.

    High: 50 °F

    Partly Sunny

  • Friday Night

    Friday Night: A slight chance of freezing rain after 5am.  Partly cloudy, with a low around 22. West southwest wind 6 to 8 mph.  Chance of precipitation is 10%.

    Low: 22 °F

    Partly Cloudy
    then Slight
    Chance
    Freezing Rain

  • Saturday

    Saturday: A slight chance of freezing rain before 8am, then a chance of snow.  Mostly cloudy, with a high near 33. Wind chill values between -5 and 5. West southwest wind 6 to 11 mph becoming north northwest 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph.  Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Chance Wintry
    Mix then
    Chance Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before 11pm.  Partly cloudy, with a low around -4. Northwest wind 16 to 21 mph, with gusts as high as 31 mph.

    Low: -4 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 11. Northwest wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 11 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 0. Calm wind becoming south southwest around 5 mph after midnight.

    Low: 0 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 35. West southwest wind 6 to 8 mph.

    High: 35 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 22. West wind around 7 mph.

    Low: 22 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy freezing fog between 10pm and midnight. Partly cloudy, with a low around 28. Calm wind becoming south around 6 mph after midnight.
Friday
Partly sunny, with a high near 50. South wind 7 to 10 mph.
Friday Night
A slight chance of freezing rain after 5am. Partly cloudy, with a low around 22. West southwest wind 6 to 8 mph. Chance of precipitation is 10%.
Saturday
A slight chance of freezing rain before 8am, then a chance of snow. Mostly cloudy, with a high near 33. Wind chill values between -5 and 5. West southwest wind 6 to 11 mph becoming north northwest 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Saturday Night
A 20 percent chance of snow before 11pm. Partly cloudy, with a low around -4. Northwest wind 16 to 21 mph, with gusts as high as 31 mph.
Sunday
Sunny, with a high near 11. Northwest wind 6 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 0. Calm wind becoming south southwest around 5 mph after midnight.
Monday
Mostly sunny, with a high near 35. West southwest wind 6 to 8 mph.
Monday Night
Mostly cloudy, with a low around 22. West wind around 7 mph.
Tuesday
Partly sunny, with a high near 41. West wind 6 to 8 mph.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 18. West wind around 6 mph.
Wednesday
A slight chance of snow. Mostly cloudy, with a high near 31.
Wednesday Night
A slight chance of snow. Mostly cloudy, with a low around 11.
New Year's Day
Mostly cloudy, with a high near 30.
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ABOUT THIS FORECAST

 
Point Forecast:
25 Miles WSW Brockway MT
 47.21°N 106.28°W (Elev. 2575 ft)
5:13 pm MST Dec 25, 2025
7pm MST Dec 25, 2025-6pm MST Jan 1, 2026
 
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Additional Resources

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