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

Yellowstone Lake (KP60)

Lat: 44.54444°NLon: 110.42111°WElev: 7835.0ft.

NA

31°F

-1°C

Humidity 92%
Wind Speed NA 4 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 29°F (-2°C)
Visibility NA
Wind Chill27°F (-3°C)
Last update 25 Dec 10:56 PM MST
Extended Forecast for

Lake WY

Winter Weather Advisory December 26, 05:00am until December 26, 11:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: Snow showers likely, mainly after midnight. Some thunder is also possible. Patchy blowing snow between 1am and 5am. Mostly cloudy, with a steady temperature around 31. Breezy, with a south southwest wind 11 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of 1 to 3 inches possible.

    Low: 31 °F

    Snow Showers
    Likely and
    Patchy
    Blowing Snow

  • Friday

    Friday: Snow showers, mainly before 4pm. Some thunder is also possible. Patchy blowing snow after 7am. High near 32. Breezy, with a south southwest wind 17 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    High: 32 °F

    Snow Showers
    and Patchy
    Blowing Snow

  • Friday Night

    Friday Night: Snow showers likely, mainly after 11pm. Mostly cloudy, with a low around 16. Breezy, with a southwest wind 11 to 16 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 16 °F

    Snow Showers
    Likely and
    Breezy

  • Saturday

    Saturday: Snow showers. High near 21. Southwest wind 6 to 9 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 21 °F

    Snow Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of snow showers before 11pm. Partly cloudy, with a low around -7. Calm wind.

    Low: -7 °F

    Slight Chance
    Snow Showers
    then Partly
    Cloudy

  • Sunday

    Sunday: Sunny, with a high near 16. Calm wind.

    High: 16 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around -4. Calm wind.

    Low: -4 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 23.

    High: 23 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 4.

    Low: 4 °F

    Partly Cloudy

Detailed Forecast

Tonight
Snow showers likely, mainly after midnight. Some thunder is also possible. Patchy blowing snow between 1am and 5am. Mostly cloudy, with a steady temperature around 31. Breezy, with a south southwest wind 11 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of 1 to 3 inches possible.
Friday
Snow showers, mainly before 4pm. Some thunder is also possible. Patchy blowing snow after 7am. High near 32. Breezy, with a south southwest wind 17 to 22 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 showers likely, mainly after 11pm. Mostly cloudy, with a low around 16. Breezy, with a southwest wind 11 to 16 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday
Snow showers. High near 21. Southwest wind 6 to 9 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
A 20 percent chance of snow showers before 11pm. Partly cloudy, with a low around -7. Calm wind.
Sunday
Sunny, with a high near 16. Calm wind.
Sunday Night
Mostly clear, with a low around -4. Calm wind.
Monday
Mostly sunny, with a high near 23.
Monday Night
Partly cloudy, with a low around 4.
Tuesday
Partly sunny, with a high near 29.
Tuesday Night
Mostly cloudy, with a low around 10.
Wednesday
Partly sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 13.
New Year's Day
A slight chance of snow showers. Mostly cloudy, with a high near 34.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lake WY
 44.55°N 110.41°W (Elev. 7910 ft)
Last Update:
10:47 pm MST Dec 25, 2025
Forecast Valid:
11pm MST Dec 25, 2025-6pm MST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation