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

TROY (TROM8)

Lat: 48.48165°NLon: 115.90507°WElev: 2009.0ft.

NA

34°F

1°C

Humidity 100%
Wind Speed NNW 2 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 26 Dec 01:07 AM MST
Extended Forecast for

8 Miles ESE Troy MT

Winter Weather Advisory December 26, 12:00pm until December 27, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: A 20 percent chance of snow before 2am. Mostly cloudy, with a low around 27. Southwest wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 27 °F

    Slight Chance
    Snow

  • Friday

    Friday: Snow, mainly after 8am. The snow could be heavy at times. Widespread blowing snow, mainly between 9am and 2pm. High near 29. Breezy, with a southwest wind 8 to 13 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 41 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    High: 29 °F

    Heavy Snow
    and Blowing
    Snow

  • Friday Night

    Friday Night: Snow. The snow could be heavy at times. Widespread blowing snow, mainly after 7pm. Low around 15. Wind chill values as low as -1. Windy, with a southwest wind 28 to 34 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 15 °F

    Heavy Snow
    and Blowing
    Snow

  • Saturday

    Saturday: Snow likely, mainly before 11am. Widespread blowing snow, mainly before 8am. Mostly cloudy, with a high near 19. Wind chill values as low as -4. Breezy, with a west northwest wind 24 to 29 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    High: 19 °F

    Snow Likely
    and Blowing
    Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 6. West wind 8 to 10 mph.

    Low: 6 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 15.

    High: 15 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 11.

    Low: 11 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 19.

    High: 19 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of snow before 2am. Mostly cloudy, with a low around 27. Southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Friday
Snow, mainly after 8am. The snow could be heavy at times. Widespread blowing snow, mainly between 9am and 2pm. High near 29. Breezy, with a southwest wind 8 to 13 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 41 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Friday Night
Snow. The snow could be heavy at times. Widespread blowing snow, mainly after 7pm. Low around 15. Wind chill values as low as -1. Windy, with a southwest wind 28 to 34 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Saturday
Snow likely, mainly before 11am. Widespread blowing snow, mainly before 8am. Mostly cloudy, with a high near 19. Wind chill values as low as -4. Breezy, with a west northwest wind 24 to 29 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Saturday Night
Mostly cloudy, with a low around 6. West wind 8 to 10 mph.
Sunday
Partly sunny, with a high near 15.
Sunday Night
Mostly cloudy, with a low around 11.
Monday
Partly sunny, with a high near 19.
Monday Night
Mostly cloudy, with a low around 15.
Tuesday
Mostly cloudy, with a high near 23.
Tuesday Night
Mostly cloudy, with a low around 18.
Wednesday
A chance of snow. Mostly cloudy, with a high near 25.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 22.
New Year's Day
Snow likely. Mostly cloudy, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
8 Miles ESE Troy MT
 48.41°N 115.75°W (Elev. 6493 ft)
Last Update:
1:03 am MST Dec 26, 2025
Forecast Valid:
1am MST Dec 26, 2025-6pm MST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

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