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

South Big Horn County Airport (KGEY)

Lat: 44.5174°NLon: 108.0752°WElev: 3934.0ft.

Mostly Cloudy

59°F

15°C

Humidity 41%
Wind Speed SE 17 MPH
Barometer 29.75 in (1007.45 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 24 Dec 11:35 PM MST
Extended Forecast for

15 Miles NNE Hyattville WY

  • Tonight

    Tonight: A slight chance of rain and snow showers before 4am, then a slight chance of rain showers between 4am and 5am, then scattered rain and snow showers after 5am. Snow level 9400 feet. Mostly cloudy, with a steady temperature around 39. Breezy, with a south wind around 22 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.

    Low: 39 °F

    Scattered
    Rain/Snow and
    Breezy

  • Christmas Day

    Christmas Day: Rain and snow showers likely before 10am, then scattered snow showers between 10am and 2pm. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 31 by 5pm. Breezy, with a south wind 16 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 39 °F⇓

    Breezy.
    Rain/Snow
    Likely then
    Isolated Snow
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 27. Breezy, with a south southwest wind 13 to 15 mph, with gusts as high as 21 mph.

    Low: 27 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Isolated snow showers after 11am. Partly sunny, with a high near 33. Breezy, with a south southwest wind 16 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    High: 33 °F

    Isolated Snow
    Showers and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 20. Breezy, with a southwest wind 14 to 17 mph, with gusts as high as 28 mph.

    Low: 20 °F

    Mostly Cloudy
    and Breezy

  • Saturday

    Saturday: A 50 percent chance of snow showers, mainly after 11am. Mostly cloudy, with a high near 26. West southwest wind around 14 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.

    High: 26 °F

    Chance Snow
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of snow showers before 11pm. Mostly cloudy, with a low around 1. North northwest wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 1 °F

    Chance Snow
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 16.

    High: 16 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 8.

    Low: 8 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of rain and snow showers before 4am, then a slight chance of rain showers between 4am and 5am, then scattered rain and snow showers after 5am. Snow level 9400 feet. Mostly cloudy, with a steady temperature around 39. Breezy, with a south wind around 22 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Christmas Day
Rain and snow showers likely before 10am, then scattered snow showers between 10am and 2pm. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 31 by 5pm. Breezy, with a south wind 16 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
Partly cloudy, with a low around 27. Breezy, with a south southwest wind 13 to 15 mph, with gusts as high as 21 mph.
Friday
Isolated snow showers after 11am. Partly sunny, with a high near 33. Breezy, with a south southwest wind 16 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 20. Breezy, with a southwest wind 14 to 17 mph, with gusts as high as 28 mph.
Saturday
A 50 percent chance of snow showers, mainly after 11am. Mostly cloudy, with a high near 26. West southwest wind around 14 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
A 40 percent chance of snow showers before 11pm. Mostly cloudy, with a low around 1. North northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 16.
Sunday Night
Mostly clear, with a low around 8.
Monday
Sunny, with a high near 29.
Monday Night
Partly cloudy, with a low around 19.
Tuesday
Mostly sunny, with a high near 35.
Tuesday Night
Partly cloudy, with a low around 23.
Wednesday
Mostly sunny, with a high near 38.
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles NNE Hyattville WY
 44.45°N 107.46°W (Elev. 8691 ft)
Last Update:
10:47 pm MST Dec 24, 2025
Forecast Valid:
11pm MST Dec 24, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation