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

I80/US30 - Peru Hill (KCMS)

Lat: 41.54958°NLon: 109.60197°WElev: 6407.0ft.

NA

50°F

10°C

Humidity 65%
Wind Speed SE 16 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility 1.24 mi
Wind Chill44°F (7°C)
Last update 25 Dec 03:42 AM MST
Extended Forecast for

Green River WY

  • Overnight

    Overnight: A 20 percent chance of rain. Mostly cloudy, with a low around 41. Breezy, with a south wind around 16 mph, with gusts as high as 24 mph.

    Low: 41 °F

    Slight Chance
    Rain and
    Breezy

  • Christmas Day

    Christmas Day: A 30 percent chance of rain, mainly before 10am. Partly sunny, with a steady temperature around 48. Breezy, with a south southwest wind 9 to 14 mph increasing to 16 to 21 mph in the morning. Winds could gust as high as 31 mph.

    High: 48 °F

    Chance Rain
    and Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 33. South wind 6 to 8 mph.

    Low: 33 °F

    Partly Cloudy

  • Friday

    Friday: Rain likely, possibly mixed with snow, mainly after 5pm. Mostly cloudy, with a high near 49. Breezy, with a southwest wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 49 °F

    Rain/Snow
    Likely and
    Breezy

  • Friday Night

    Friday Night: Rain and snow likely, becoming all snow after 8pm. Mostly cloudy, with a low around 28. West southwest wind around 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Saturday

    Saturday: A 30 percent chance of snow, mainly before 11am. Partly sunny, with a high near 37. Breezy, with a west wind 10 to 18 mph, with gusts as high as 28 mph.

    High: 37 °F

    Chance Snow
    and Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 11. West northwest wind 9 to 14 mph, with gusts as high as 21 mph.

    Low: 11 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 28.

    High: 28 °F

    Sunny

  • Sunday Night

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

    Low: 9 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of rain. Mostly cloudy, with a low around 41. Breezy, with a south wind around 16 mph, with gusts as high as 24 mph.
Christmas Day
A 30 percent chance of rain, mainly before 10am. Partly sunny, with a steady temperature around 48. Breezy, with a south southwest wind 9 to 14 mph increasing to 16 to 21 mph in the morning. Winds could gust as high as 31 mph.
Thursday Night
Partly cloudy, with a low around 33. South wind 6 to 8 mph.
Friday
Rain likely, possibly mixed with snow, mainly after 5pm. Mostly cloudy, with a high near 49. Breezy, with a southwest wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday Night
Rain and snow likely, becoming all snow after 8pm. Mostly cloudy, with a low around 28. West southwest wind around 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday
A 30 percent chance of snow, mainly before 11am. Partly sunny, with a high near 37. Breezy, with a west wind 10 to 18 mph, with gusts as high as 28 mph.
Saturday Night
Partly cloudy, with a low around 11. West northwest wind 9 to 14 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 28.
Sunday Night
Mostly clear, with a low around 9.
Monday
Sunny, with a high near 33.
Monday Night
Mostly clear, with a low around 16.
Tuesday
Mostly sunny, with a high near 41.
Tuesday Night
Mostly clear, with a low around 19.
Wednesday
Sunny, with a high near 44.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Green River WY
 41.51°N 109.47°W (Elev. 6283 ft)
Last Update:
2:32 am MST Dec 25, 2025
Forecast Valid:
3am MST Dec 25, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation