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 3 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 29°F (-2°C)
Visibility NA
Last update 26 Dec 02:56 AM 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

  • Overnight

    Overnight: Snow likely. Patchy blowing snow before 5am. Mostly cloudy, with a steady temperature around 30. Breezy, with a southwest wind around 18 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of 1 to 3 inches possible.

    Low: 30 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Friday

    Friday: Snow, mainly before 4pm. Some thunder is also possible. Patchy blowing snow after 7am. High near 33. 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: 33 °F

    Snow and
    Patchy
    Blowing Snow

  • Friday Night

    Friday Night: Snow 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 Likely
    and Breezy

  • Saturday

    Saturday: Snow. High near 23. Southwest wind 6 to 10 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 23 °F

    Snow

  • Saturday Night

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

    Low: -7 °F

    Slight Chance
    Snow then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 14. Calm wind.

    High: 14 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -4. Calm wind.

    Low: -4 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 24.

    High: 24 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 5.

    Low: 5 °F

    Partly Cloudy

Detailed Forecast

Overnight
Snow likely. Patchy blowing snow before 5am. Mostly cloudy, with a steady temperature around 30. Breezy, with a southwest wind around 18 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of 1 to 3 inches possible.
Friday
Snow, mainly before 4pm. Some thunder is also possible. Patchy blowing snow after 7am. High near 33. 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 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. High near 23. Southwest wind 6 to 10 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Saturday Night
A 20 percent chance of snow before 11pm. Partly cloudy, with a low around -7. Calm wind.
Sunday
Sunny, with a high near 14. Calm wind.
Sunday Night
Partly cloudy, with a low around -4. Calm wind.
Monday
Sunny, with a high near 24.
Monday Night
Partly cloudy, with a low around 5.
Tuesday
Partly sunny, with a high near 29.
Tuesday Night
Mostly cloudy, with a low around 6.
Wednesday
Partly sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 11.
New Year's Day
Mostly cloudy, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake WY
 44.55°N 110.41°W (Elev. 7910 ft)
Last Update:
2:32 am MST Dec 26, 2025
Forecast Valid:
4am MST Dec 26, 2025-6pm MST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation