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

OLD FAITHFUL RANGER STATION (OFAW4)

Lat: 44.456667°NLon: 110.849444°WElev: 7332.0ft.

NA

36°F

2°C

Humidity 100%
Wind Speed WSW 6 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Wind Chill31°F (-1°C)
Last update 25 Dec 04:15 PM MST
Extended Forecast for

Old Faithful WY

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

  • Christmas Day

    Christmas Day: Scattered snow showers. Some thunder is also possible. Partly sunny, with a high near 38. Southwest wind around 14 mph, with gusts as high as 32 mph. Chance of precipitation is 40%. Total daytime snow accumulation of less than a half inch possible.

    High: 38 °F

    Scattered
    Snow Showers

  • Tonight

    Tonight: Snow showers. The snow could be heavy at times. Patchy blowing snow between 3am and 4am. Low around 27. Breezy, with a south southwest wind 15 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    Low: 27 °F

    Heavy Snow
    and Patchy
    Blowing Snow

  • Friday

    Friday: Snow showers, mainly before 5pm. The snow could be heavy at times. Patchy blowing snow before 8am, then areas of blowing snow after 9am. High near 35. Breezy, with a southwest wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.

    High: 35 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Friday Night

    Friday Night: Snow showers. Some thunder is also possible. Low around 16. Breezy, with a southwest wind 6 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    Low: 16 °F

    Snow Showers
    and Breezy

  • Saturday

    Saturday: Snow showers. Some thunder is also possible. High near 26. Southwest wind 6 to 10 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    High: 26 °F

    Snow Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of snow showers before 11pm. Partly cloudy, with a low around -7. Light northwest wind.

    Low: -7 °F

    Chance Snow
    Showers then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 18. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 18 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around -2.

    Low: -2 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 24.

    High: 24 °F

    Sunny

Detailed Forecast

Christmas Day
Scattered snow showers. Some thunder is also possible. Partly sunny, with a high near 38. Southwest wind around 14 mph, with gusts as high as 32 mph. Chance of precipitation is 40%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow showers. The snow could be heavy at times. Patchy blowing snow between 3am and 4am. Low around 27. Breezy, with a south southwest wind 15 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Friday
Snow showers, mainly before 5pm. The snow could be heavy at times. Patchy blowing snow before 8am, then areas of blowing snow after 9am. High near 35. Breezy, with a southwest wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.
Friday Night
Snow showers. Some thunder is also possible. Low around 16. Breezy, with a southwest wind 6 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Saturday
Snow showers. Some thunder is also possible. High near 26. Southwest wind 6 to 10 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Saturday Night
A 30 percent chance of snow showers before 11pm. Partly cloudy, with a low around -7. Light northwest wind.
Sunday
Sunny, with a high near 18. Calm wind becoming west southwest around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around -2.
Monday
Sunny, with a high near 24.
Monday Night
Partly cloudy, with a low around 5.
Tuesday
Partly sunny, with a high near 30.
Tuesday Night
Mostly cloudy, with a low around 12.
Wednesday
Partly sunny, with a high near 34.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Old Faithful WY
 44.45°N 110.85°W (Elev. 7398 ft)
Last Update:
4:17 pm MST Dec 25, 2025
Forecast Valid:
4pm MST Dec 25, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation