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 >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

Lat: 46.52361°NLon: 112.80843°WElev: 4327.0ft.

unknown precip

37°F

3°C

Humidity NA
Wind Speed NE 3 MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update NA
Extended Forecast for

6 Miles E Elliston MT

  • Overnight

    Overnight: A slight chance of rain and snow. Snow level 6700 feet. Mostly cloudy, with a low around 31. West wind around 9 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Slight Chance
    Rain/Snow

  • Christmas Day

    Christmas Day: A slight chance of rain and snow before 7am. Snow level 6400 feet. Mostly sunny, with a high near 39. Southwest wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 10%.

    High: 39 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow, mainly between 1am and 4am. Mostly cloudy, with a low around 28. Southwest wind 11 to 14 mph, with gusts as high as 24 mph. New snow accumulation of less than one inch possible.

    Low: 28 °F

    Chance Snow

  • Friday

    Friday: Snow likely, mainly after 11am. Patchy blowing snow after 11am. Mostly cloudy, with a high near 35. Breezy, with a south southwest wind 11 to 16 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 41 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 35 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Friday Night

    Friday Night: Snow likely, mainly after 11pm. Patchy blowing snow after 11pm. Mostly cloudy, with a low around 17. Breezy, with a west southwest wind 24 to 28 mph, with gusts as high as 46 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 17 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Saturday

    Saturday: Snow. Areas of blowing snow before 2pm. High near 19. Breezy. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 19 °F

    Snow and
    Areas Blowing
    Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 4.

    Low: 4 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 18.

    High: 18 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 14.

    Low: 14 °F

    Partly Cloudy

Detailed Forecast

Overnight
A slight chance of rain and snow. Snow level 6700 feet. Mostly cloudy, with a low around 31. West wind around 9 mph. Chance of precipitation is 20%.
Christmas Day
A slight chance of rain and snow before 7am. Snow level 6400 feet. Mostly sunny, with a high near 39. Southwest wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 10%.
Thursday Night
A 30 percent chance of snow, mainly between 1am and 4am. Mostly cloudy, with a low around 28. Southwest wind 11 to 14 mph, with gusts as high as 24 mph. New snow accumulation of less than one inch possible.
Friday
Snow likely, mainly after 11am. Patchy blowing snow after 11am. Mostly cloudy, with a high near 35. Breezy, with a south southwest wind 11 to 16 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 41 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
Snow likely, mainly after 11pm. Patchy blowing snow after 11pm. Mostly cloudy, with a low around 17. Breezy, with a west southwest wind 24 to 28 mph, with gusts as high as 46 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Saturday
Snow. Areas of blowing snow before 2pm. High near 19. Breezy. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
Mostly cloudy, with a low around 4.
Sunday
Mostly sunny, with a high near 18.
Sunday Night
Partly cloudy, with a low around 14.
Monday
Mostly sunny, with a high near 28.
Monday Night
Mostly cloudy, with a low around 22.
Tuesday
Mostly cloudy, with a high near 34.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
Partly sunny, with a high near 36.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles E Elliston MT
 46.56°N 112.32°W (Elev. 6168 ft)
Last Update:
1:02 am MST Dec 25, 2025
Forecast Valid:
5am 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