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.

Clear

57°F

14°C

Humidity 47%
Wind Speed SE 21 MPH
Barometer 29.71 in (1006.1 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 25 Dec 02:00 AM MST
Extended Forecast for

12 Miles NNW Shell WY

  • Overnight

    Overnight: A 10 percent chance of rain after 5am. Mostly cloudy, with a steady temperature around 49. Windy, with a southeast wind 24 to 26 mph, with gusts as high as 40 mph.

    Low: 49 °F

    Slight Chance
    Rain and
    Windy

  • Christmas Day

    Christmas Day: A 30 percent chance of rain, mainly before 10am. Snow level 8900 feet lowering to 6900 feet in the afternoon . Cloudy, then gradually becoming mostly sunny, with a high near 52. Breezy, with a southeast wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 52 °F

    Chance Rain
    and Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 37. Breezy, with a southeast wind 13 to 15 mph, with gusts as high as 23 mph.

    Low: 37 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: A chance of rain and snow after 11am. Partly sunny, with a high near 44. Breezy, with a south southeast wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    High: 44 °F

    Chance
    Rain/Snow and
    Breezy

  • Friday Night

    Friday Night: A 30 percent chance of snow before 11pm. Mostly cloudy, with a low around 30. Breezy, with a south wind 13 to 16 mph, with gusts as high as 24 mph.

    Low: 30 °F

    Chance Snow
    and Breezy
    then Partly
    Cloudy

  • Saturday

    Saturday: Snow likely, mainly after 11am. Partly sunny, with a high near 33. South wind 9 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 70%.

    High: 33 °F

    Snow Likely

  • Saturday Night

    Saturday Night: Snow likely, mainly before 11pm. Partly cloudy, with a low around 11. Blustery, with a north northwest wind 7 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.

    Low: 11 °F

    Snow Likely
    and Blustery
    then Slight
    Chance Snow

  • Sunday

    Sunday: Sunny, with a high near 20.

    High: 20 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 16.

    Low: 16 °F

    Mostly Clear

Detailed Forecast

Overnight
A 10 percent chance of rain after 5am. Mostly cloudy, with a steady temperature around 49. Windy, with a southeast wind 24 to 26 mph, with gusts as high as 40 mph.
Christmas Day
A 30 percent chance of rain, mainly before 10am. Snow level 8900 feet lowering to 6900 feet in the afternoon . Cloudy, then gradually becoming mostly sunny, with a high near 52. Breezy, with a southeast wind 10 to 20 mph, with gusts as high as 30 mph.
Thursday Night
Partly cloudy, with a low around 37. Breezy, with a southeast wind 13 to 15 mph, with gusts as high as 23 mph.
Friday
A chance of rain and snow after 11am. Partly sunny, with a high near 44. Breezy, with a south southeast wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Friday Night
A 30 percent chance of snow before 11pm. Mostly cloudy, with a low around 30. Breezy, with a south wind 13 to 16 mph, with gusts as high as 24 mph.
Saturday
Snow likely, mainly after 11am. Partly sunny, with a high near 33. South wind 9 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 70%.
Saturday Night
Snow likely, mainly before 11pm. Partly cloudy, with a low around 11. Blustery, with a north northwest wind 7 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Sunday
Sunny, with a high near 20.
Sunday Night
Mostly clear, with a low around 16.
Monday
Sunny, with a high near 32.
Monday Night
Mostly cloudy, with a low around 26.
Tuesday
Partly sunny, with a high near 39.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
Partly sunny, with a high near 39.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NNW Shell WY
 44.7°N 107.86°W (Elev. 5997 ft)
Last Update:
1:48 am MST Dec 25, 2025
Forecast Valid:
2am MST Dec 25, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation