Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. 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 44%
Wind Speed SW 8 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Wind Chill43°F (6°C)
Last update 24 Dec 04:27 AM MST
Extended Forecast for

18 Miles SSW Bonanza UT

  • Today

    Today: A 20 percent chance of showers after 4pm.  Increasing clouds, with a high near 54. South wind 10 to 15 mph.

    High: 54 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: Showers likely, mainly after 2am.  Mostly cloudy, with a low around 45. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 60%.

    Low: 45 °F

    Showers
    Likely and
    Breezy

  • Christmas Day

    Christmas Day: Showers.  High near 57. Breezy, with a south wind around 20 mph, with gusts as high as 35 mph.  Chance of precipitation is 90%.

    High: 57 °F

    Showers and
    Breezy

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before 11pm.  Increasing clouds, with a low around 40. South southwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 40 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of showers, mainly after 11am.  Mostly cloudy, with a high near 52. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 52 °F

    Chance
    Showers and
    Breezy

  • Friday Night

    Friday Night: A chance of rain showers before 11pm, then a chance of rain and snow showers. Some thunder is also possible.  Mostly cloudy, with a low around 33. Chance of precipitation is 50%.

    Low: 33 °F

    Chance
    Rain/Snow

  • Saturday

    Saturday: A chance of rain and snow showers before 11am, then a chance of snow showers.  Partly sunny, with a high near 46. Chance of precipitation is 40%.

    High: 46 °F

    Chance
    Rain/Snow
    then Chance
    Snow Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 40.

    High: 40 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers after 4pm. Increasing clouds, with a high near 54. South wind 10 to 15 mph.
Tonight
Showers likely, mainly after 2am. Mostly cloudy, with a low around 45. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Christmas Day
Showers. High near 57. Breezy, with a south wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 90%.
Thursday Night
A 20 percent chance of showers before 11pm. Increasing clouds, with a low around 40. South southwest wind around 15 mph, with gusts as high as 30 mph.
Friday
A 40 percent chance of showers, mainly after 11am. Mostly cloudy, with a high near 52. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
A chance of rain showers before 11pm, then a chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 33. Chance of precipitation is 50%.
Saturday
A chance of rain and snow showers before 11am, then a chance of snow showers. Partly sunny, with a high near 46. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Sunny, with a high near 40.
Sunday Night
Mostly clear, with a low around 22.
Monday
Sunny, with a high near 40.
Monday Night
Mostly clear, with a low around 23.
Tuesday
Sunny, with a high near 43.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
18 Miles SSW Bonanza UT
 39.78°N 109.32°W (Elev. 5997 ft)
3:32 am MST Dec 24, 2025
5am MST Dec 24, 2025-6pm MST Dec 30, 2025
 
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Additional Resources

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