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

Buffalo - Johnson County Airport (KBYG)

Lat: 44.38122°NLon: 106.71947°WElev: 4925.0ft.

Clear

61°F

16°C

Humidity 36%
Wind Speed SSW 9 MPH
Barometer 29.75 in (1007.45 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 25 Dec 12:20 AM MST
Extended Forecast for

13 Miles S Story WY

  • Overnight

    Overnight: Snow likely before 2am, then a chance of snow after 3am.  Mostly cloudy, with a low around 27. Very windy, with a southwest wind 34 to 43 mph, with gusts as high as 65 mph.  Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 27 °F

    Snow Likely
    and Very
    Windy

  • Christmas Day

    Christmas Day: A 40 percent chance of snow, mainly before 3pm.  Mostly sunny, with a temperature rising to near 37 by 11am, then falling to around 25 during the remainder of the day. Very windy, with a southwest wind 30 to 38 mph, with gusts as high as 55 mph.  New snow accumulation of less than one inch possible.

    High: 37 °F

    Chance Snow
    and Very
    Windy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 19. Wind chill values as low as zero. Windy, with a west southwest wind 28 to 31 mph, with gusts as high as 47 mph.

    Low: 19 °F

    Partly Cloudy
    and Windy

  • Friday

    Friday: A 30 percent chance of snow after 11am.  Mostly cloudy, with a high near 26. Windy, with a southwest wind 29 to 31 mph, with gusts as high as 47 mph.

    High: 26 °F

    Chance Snow
    and Windy

  • Friday Night

    Friday Night: A 30 percent chance of snow before 11pm.  Mostly cloudy, with a low around 10. Windy, with a west southwest wind 26 to 29 mph, with gusts as high as 44 mph.

    Low: 10 °F

    Windy. Chance
    Snow then
    Mostly Cloudy

  • Saturday

    Saturday: Snow likely, mainly after 11am.  Partly sunny, with a high near 17. Windy, with a west wind 22 to 26 mph, with gusts as high as 40 mph.  Chance of precipitation is 60%.

    High: 17 °F

    Snow Likely
    and Windy

  • Saturday Night

    Saturday Night: Snow likely, mainly before 11pm.  Mostly cloudy, with a low around -8. Blustery, with a northwest wind 17 to 21 mph, with gusts as high as 31 mph.  Chance of precipitation is 60%.

    Low: -8 °F

    Blustery.
    Snow Likely
    then Chance
    Snow

  • Sunday

    Sunday: Sunny and cold, with a high near 6. Blustery.

    High: 6 °F

    Cold and
    Blustery

  • Sunday Night

    Sunday Night: Mostly clear, with a low around -2. Breezy.

    Low: -2 °F

    Mostly Clear
    and Breezy

Detailed Forecast

Overnight
Snow likely before 2am, then a chance of snow after 3am. Mostly cloudy, with a low around 27. Very windy, with a southwest wind 34 to 43 mph, with gusts as high as 65 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.
Christmas Day
A 40 percent chance of snow, mainly before 3pm. Mostly sunny, with a temperature rising to near 37 by 11am, then falling to around 25 during the remainder of the day. Very windy, with a southwest wind 30 to 38 mph, with gusts as high as 55 mph. New snow accumulation of less than one inch possible.
Thursday Night
Partly cloudy, with a low around 19. Wind chill values as low as zero. Windy, with a west southwest wind 28 to 31 mph, with gusts as high as 47 mph.
Friday
A 30 percent chance of snow after 11am. Mostly cloudy, with a high near 26. Windy, with a southwest wind 29 to 31 mph, with gusts as high as 47 mph.
Friday Night
A 30 percent chance of snow before 11pm. Mostly cloudy, with a low around 10. Windy, with a west southwest wind 26 to 29 mph, with gusts as high as 44 mph.
Saturday
Snow likely, mainly after 11am. Partly sunny, with a high near 17. Windy, with a west wind 22 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 60%.
Saturday Night
Snow likely, mainly before 11pm. Mostly cloudy, with a low around -8. Blustery, with a northwest wind 17 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.
Sunday
Sunny and cold, with a high near 6. Blustery.
Sunday Night
Mostly clear, with a low around -2. Breezy.
Monday
Sunny, with a high near 22. Breezy.
Monday Night
Mostly cloudy, with a low around 13. Breezy.
Tuesday
Partly sunny, with a high near 27. Breezy.
Tuesday Night
Mostly cloudy, with a low around 16. Breezy.
Wednesday
Partly sunny, with a high near 29. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles S Story WY
 44.42°N 107.16°W (Elev. 10400 ft)
12:02 am MST Dec 25, 2025
12am MST Dec 25, 2025-6pm MST Dec 31, 2025
 
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Additional Resources

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Hourly Weather Forecast

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