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

ST. MARY (SRYM8)

Lat: 48.74108°NLon: 113.43289°WElev: 4557.0ft.

NA

18°F

-8°C

Humidity 92%
Wind Speed ESE 1 MPH
Barometer NA
Dewpoint 16°F (-9°C)
Visibility NA
Last update 24 Dec 11:11 PM MST
Extended Forecast for

7 Miles S St Mary MT

  • Tonight

    Tonight: Snow likely, mainly before 2am. Patchy freezing fog before 2am. Mostly cloudy, with a low around 21. Breezy, with a west southwest wind 17 to 23 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.

    Low: 21 °F

    Snow Likely
    and Patchy
    Freezing Fog

  • Christmas Day

    Christmas Day: A 20 percent chance of snow after 4pm. Mostly sunny, with a high near 28. Breezy, with a west southwest wind 21 to 24 mph, with gusts as high as 34 mph.

    High: 28 °F

    Breezy.
    Mostly Sunny
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 23. Breezy, with a west southwest wind 25 to 28 mph, with gusts as high as 37 mph. New snow accumulation of 1 to 2 inches possible.

    Low: 23 °F

    Chance Snow
    and Breezy

  • Friday

    Friday: Snow likely, mainly after 11am. Mostly cloudy, with a high near 24. Windy, with a west southwest wind 29 to 31 mph, with gusts as high as 41 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    High: 24 °F

    Snow Likely
    and Windy

  • Friday Night

    Friday Night: Snow. The snow could be heavy at times. Low around -7. Windy, with a southwest wind 30 to 36 mph, with gusts as high as 46 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    Low: -7 °F

    Heavy Snow
    and Windy

  • Saturday

    Saturday: Snow, mainly before 11am. High near 0. Blustery, with a north wind 23 to 28 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 0 °F

    Snow and
    Blustery then
    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -4. Breezy, with a north northwest wind 8 to 13 mph becoming west southwest 17 to 22 mph in the evening. Winds could gust as high as 25 mph.

    Low: -4 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Sunday

    Sunday: Mostly sunny, with a high near 11. Windy, with a west southwest wind 26 to 30 mph, with gusts as high as 36 mph.

    High: 11 °F

    Mostly Sunny
    and Windy

  • Sunday Night

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

    Low: 11 °F

    Mostly Cloudy
    and Windy

Detailed Forecast

Tonight
Snow likely, mainly before 2am. Patchy freezing fog before 2am. Mostly cloudy, with a low around 21. Breezy, with a west southwest wind 17 to 23 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.
Christmas Day
A 20 percent chance of snow after 4pm. Mostly sunny, with a high near 28. Breezy, with a west southwest wind 21 to 24 mph, with gusts as high as 34 mph.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 23. Breezy, with a west southwest wind 25 to 28 mph, with gusts as high as 37 mph. New snow accumulation of 1 to 2 inches possible.
Friday
Snow likely, mainly after 11am. Mostly cloudy, with a high near 24. Windy, with a west southwest wind 29 to 31 mph, with gusts as high as 41 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Friday Night
Snow. The snow could be heavy at times. Low around -7. Windy, with a southwest wind 30 to 36 mph, with gusts as high as 46 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Saturday
Snow, mainly before 11am. High near 0. Blustery, with a north wind 23 to 28 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Saturday Night
Mostly cloudy, with a low around -4. Breezy, with a north northwest wind 8 to 13 mph becoming west southwest 17 to 22 mph in the evening. Winds could gust as high as 25 mph.
Sunday
Mostly sunny, with a high near 11. Windy, with a west southwest wind 26 to 30 mph, with gusts as high as 36 mph.
Sunday Night
Mostly cloudy, with a low around 11. Windy.
Monday
Partly sunny, with a high near 20. Windy.
Monday Night
Mostly cloudy, with a low around 18. Windy.
Tuesday
Mostly cloudy, with a high near 24. Windy.
Tuesday Night
Mostly cloudy, with a low around 20. Breezy.
Wednesday
A slight chance of snow. Partly sunny, with a high near 26. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles S St Mary MT
 48.64°N 113.42°W (Elev. 7927 ft)
Last Update:
10:42 pm MST Dec 24, 2025
Forecast Valid:
11pm MST Dec 24, 2025-6pm MST Dec 31, 2025
 
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