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

TROY (TROM8)

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

NA

37°F

3°C

Humidity 100%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 25 Dec 08:07 AM MST
Extended Forecast for

3 Miles SSW Troy MT

  • Christmas Day

    Christmas Day: Rain likely, mainly between 10am and noon. Patchy fog between 9am and 10am. Otherwise, mostly cloudy, with a high near 43. Calm wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 43 °F

    Rain Likely
    and Patchy
    Fog

  • Tonight

    Tonight: Rain, mainly before midnight. Low around 33. Light south wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 33 °F

    Rain then
    Chance Rain

  • Friday

    Friday: Rain likely, possibly mixed with snow before 11am, then rain between 11am and 2pm, then rain and snow after 2pm. Snow level 3400 feet. High near 40. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Rain/Snow

  • Friday Night

    Friday Night: Rain and snow, becoming all snow after 8pm. Low around 23. Southwest wind 10 to 13 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 23 °F

    Rain/Snow
    then Snow

  • Saturday

    Saturday: A 40 percent chance of snow, mainly before 11am. Partly sunny, with a high near 30. West southwest wind 5 to 9 mph becoming light west northwest in the afternoon. Winds could gust as high as 24 mph. New snow accumulation of less than a half inch possible.

    High: 30 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 12.

    Low: 12 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 29.

    High: 29 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 34.

    High: 34 °F

    Mostly Cloudy

Detailed Forecast

Christmas Day
Rain likely, mainly between 10am and noon. Patchy fog between 9am and 10am. Otherwise, mostly cloudy, with a high near 43. Calm wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain, mainly before midnight. Low around 33. Light south wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain likely, possibly mixed with snow before 11am, then rain between 11am and 2pm, then rain and snow after 2pm. Snow level 3400 feet. High near 40. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Friday Night
Rain and snow, becoming all snow after 8pm. Low around 23. Southwest wind 10 to 13 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Saturday
A 40 percent chance of snow, mainly before 11am. Partly sunny, with a high near 30. West southwest wind 5 to 9 mph becoming light west northwest in the afternoon. Winds could gust as high as 24 mph. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly cloudy, with a low around 12.
Sunday
Partly sunny, with a high near 29.
Sunday Night
Mostly cloudy, with a low around 19.
Monday
Mostly cloudy, with a high near 34.
Monday Night
Mostly cloudy, with a low around 22.
Tuesday
Partly sunny, with a high near 37.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
A slight chance of rain and snow. Snow level rising to 3300 feet in the afternoon. Mostly cloudy, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Troy MT
 48.42°N 115.91°W (Elev. 2641 ft)
Last Update:
1:02 am MST Dec 25, 2025
Forecast Valid:
8am MST Dec 25, 2025-6pm MST Dec 31, 2025
 
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Additional Resources

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Chance of Precipitation