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

UPPER SAND WASH (USWU1)

Lat: 39.70819°NLon: 109.441°WElev: 6469.0ft.

NA

47°F

8°C

Humidity 79%
Wind Speed S 19 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Wind Chill40°F (4°C)
Last update 25 Dec 09:27 AM MST
Extended Forecast for

12 Miles WNW Bonanza UT

  • Christmas Day

    Christmas Day: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 62. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 62 °F

    Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 11pm. Increasing clouds, with a low around 36. South southwest wind 5 to 10 mph becoming east southeast after midnight. Winds could gust as high as 20 mph.

    Low: 36 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of showers, mainly after 11am. Cloudy, with a high near 55. South southeast wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.

    High: 55 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly after 11pm. Mostly cloudy, with a low around 33. West southwest wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 33 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of rain showers before 11am, then a chance of rain and snow showers. Partly sunny, with a high near 47. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 47 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow showers. Mostly cloudy, with a low around 19.

    Low: 19 °F

    Chance Snow
    Showers

  • Sunday

    Sunday: Sunny, with a high near 35.

    High: 35 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 9.

    Low: 9 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 32.

    High: 32 °F

    Sunny

Detailed Forecast

Christmas Day
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 62. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
A 20 percent chance of showers before 11pm. Increasing clouds, with a low around 36. South southwest wind 5 to 10 mph becoming east southeast after midnight. Winds could gust as high as 20 mph.
Friday
A 40 percent chance of showers, mainly after 11am. Cloudy, with a high near 55. South southeast wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Showers likely, mainly after 11pm. Mostly cloudy, with a low around 33. West southwest wind 5 to 10 mph. Chance of precipitation is 60%.
Saturday
A chance of rain showers before 11am, then a chance of rain and snow showers. Partly sunny, with a high near 47. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Saturday Night
A 30 percent chance of snow showers. Mostly cloudy, with a low around 19.
Sunday
Sunny, with a high near 35.
Sunday Night
Mostly clear, with a low around 9.
Monday
Sunny, with a high near 32.
Monday Night
Mostly clear, with a low around 10.
Tuesday
Sunny, with a high near 34.
Tuesday Night
Mostly clear, with a low around 12.
Wednesday
Sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles WNW Bonanza UT
 40.07°N 109.38°W (Elev. 4925 ft)
Last Update:
9:47 am MST Dec 25, 2025
Forecast Valid:
10am MST Dec 25, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation