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

WY28 - South Pass (KSOU)

Lat: 42.47752°NLon: 108.8444°WElev: 8196.0ft.

NA

39°F

4°C

Humidity 86%
Wind Speed SSW 11 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Wind Chill32°F (0°C)
Last update 24 Dec 11:56 PM MST
Extended Forecast for

3 Miles NNE South Pass City WY

Winter Weather Advisory until December 25, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until December 25, 05:00pm

    NOW until 5:00pm Thu

    Winter Weather Advisory

  • Overnight

    Low: 40 °F

    Rain/Snow and
    Breezy

  • Christmas Day

    Christmas Day: Rain and snow showers, becoming all snow after 10am. High near 39. Windy, with a west southwest wind 22 to 32 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Windy.
    Rain/Snow
    then
    Scattered
    Snow Showers

  • Thursday Night

    Thursday Night: Scattered snow showers. Mostly cloudy, with a low around 30. Breezy, with a west southwest wind around 21 mph, with gusts as high as 29 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.

    Low: 30 °F

    Scattered
    Snow Showers
    and Breezy

  • Friday

    Friday: Snow showers. High near 32. Windy, with a southwest wind 21 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    High: 32 °F

    Snow Showers
    and Windy

  • Friday Night

    Friday Night: Snow showers, mainly before 11pm. Low around 21. Breezy, with a west southwest wind around 21 mph, with gusts as high as 38 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    Low: 21 °F

    Breezy. Snow
    Showers then
    Chance Snow
    Showers

  • Saturday

    Saturday: A 30 percent chance of snow showers. Partly sunny, with a high near 26. Windy, with a west southwest wind 21 to 26 mph, with gusts as high as 43 mph.

    High: 26 °F

    Chance Snow
    Showers and
    Windy

  • Saturday Night

    Saturday Night: A 30 percent chance of snow showers, mainly before 11pm. Partly cloudy, with a low around 4. Breezy, with a northwest wind 9 to 16 mph, with gusts as high as 29 mph.

    Low: 4 °F

    Chance Snow
    Showers and
    Breezy

  • Sunday

    Sunday: Sunny, with a high near 19.

    High: 19 °F

    Sunny

Detailed Forecast

Overnight
Rain showers before 4am, then rain likely, possibly mixed with snow showers between 4am and 5am, then rain showers after 5am. Snow level 9500 feet. Steady temperature around 40. Breezy, with a southwest wind 22 to 24 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Christmas Day
Rain and snow showers, becoming all snow after 10am. High near 39. Windy, with a west southwest wind 22 to 32 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Thursday Night
Scattered snow showers. Mostly cloudy, with a low around 30. Breezy, with a west southwest wind around 21 mph, with gusts as high as 29 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.
Friday
Snow showers. High near 32. Windy, with a southwest wind 21 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Friday Night
Snow showers, mainly before 11pm. Low around 21. Breezy, with a west southwest wind around 21 mph, with gusts as high as 38 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Saturday
A 30 percent chance of snow showers. Partly sunny, with a high near 26. Windy, with a west southwest wind 21 to 26 mph, with gusts as high as 43 mph.
Saturday Night
A 30 percent chance of snow showers, mainly before 11pm. Partly cloudy, with a low around 4. Breezy, with a northwest wind 9 to 16 mph, with gusts as high as 29 mph.
Sunday
Sunny, with a high near 19.
Sunday Night
Mostly clear, with a low around 8.
Monday
Sunny, with a high near 27.
Monday Night
Mostly clear, with a low around 18.
Tuesday
Sunny, with a high near 34.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Sunny, with a high near 36.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE South Pass City WY
 42.51°N 108.79°W (Elev. 8399 ft)
Last Update:
10:47 pm MST Dec 24, 2025
Forecast Valid:
12am MST Dec 25, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation