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

HEBGEN LAKE (HBRM8)

Lat: 44.66597°NLon: 111.09911°WElev: 6700.0ft.

NA

35°F

2°C

Humidity 100%
Wind Speed SW 2 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 25 Dec 04:39 AM MST
Extended Forecast for

2 Miles NNW West Yellowstone MT

  • Overnight

    Overnight: Rain likely. Cloudy, with a low around 33. South southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    Low: 33 °F

    Rain Likely

  • Christmas Day

    Christmas Day: Rain likely, possibly mixed with snow, mainly after 5pm. Mostly cloudy, with a high near 40. South southwest wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Snow likely, possibly mixed with rain before 8pm, then snow. Low around 28. South southwest wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 28 °F

    Rain/Snow
    then Snow

  • Friday

    Friday: Snow. High near 36. South southwest wind 11 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 36 °F

    Snow

  • Friday Night

    Friday Night: Snow likely, mainly after 11pm. Mostly cloudy, with a low around 18. South southwest wind 13 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 18 °F

    Snow Likely

  • Saturday

    Saturday: Snow. High near 27. Southwest wind 11 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 27 °F

    Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before 11pm. Partly cloudy, with a low around -6. Northwest wind around 6 mph becoming calm in the evening.

    Low: -6 °F

    Slight Chance
    Snow then
    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 19. Light southwest wind.

    High: 19 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -1.

    Low: -1 °F

    Partly Cloudy

Detailed Forecast

Overnight
Rain likely. Cloudy, with a low around 33. South southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Christmas Day
Rain likely, possibly mixed with snow, mainly after 5pm. Mostly cloudy, with a high near 40. South southwest wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow likely, possibly mixed with rain before 8pm, then snow. Low around 28. South southwest wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Friday
Snow. High near 36. South southwest wind 11 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Friday Night
Snow likely, mainly after 11pm. Mostly cloudy, with a low around 18. South southwest wind 13 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Saturday
Snow. High near 27. Southwest wind 11 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
A 20 percent chance of snow before 11pm. Partly cloudy, with a low around -6. Northwest wind around 6 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 19. Light southwest wind.
Sunday Night
Partly cloudy, with a low around -1.
Monday
Mostly sunny, with a high near 25.
Monday Night
Mostly cloudy, with a low around 5.
Tuesday
Partly sunny, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 11.
Wednesday
Partly sunny, with a high near 34.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW West Yellowstone MT
 44.69°N 111.13°W (Elev. 6650 ft)
Last Update:
5:07 am MST Dec 25, 2025
Forecast Valid:
5am MST Dec 25, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation