National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. Read More >

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

Lat: 48.74111°NLon: 113.43306°WElev: 4550.0ft.

NA

42°F

6°C

Humidity 35%
Wind Speed NA 8 MPH
Barometer NA
Dewpoint 16°F (-9°C)
Visibility NA
Wind Chill37°F (3°C)
Last update 01 Jan 12:10 AM MST
Extended Forecast for

St Mary MT

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 35. South southwest wind 7 to 9 mph.

    Low: 35 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 41. Southwest wind 9 to 11 mph.

    High: 41 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 32. Southwest wind 14 to 16 mph, with gusts as high as 23 mph.

    Low: 32 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of snow before 11am, then a slight chance of rain and snow. Partly sunny, with a high near 42. Breezy, with a southwest wind 16 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    High: 42 °F

    Slight Chance
    Rain/Snow and
    Breezy

  • Friday Night

    Friday Night: A slight chance of rain and snow. Mostly cloudy, with a low around 36. West southwest wind 16 to 21 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 10%.

    Low: 36 °F

    Slight Chance
    Rain/Snow

  • Saturday

    Saturday: A chance of rain and snow, mainly after 11am. Partly sunny, with a high near 42. Southwest wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 42 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A chance of rain and snow. Mostly cloudy, with a low around 33. Southwest wind 9 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 33 °F

    Chance
    Rain/Snow

  • Sunday

    Sunday: A chance of rain and snow before 8am, then a chance of snow. Partly sunny, with a high near 41. West southwest wind 11 to 14 mph, with gusts as high as 30 mph.

    High: 41 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Sunday Night

    Sunday Night: A slight chance of snow before 11pm. Mostly cloudy, with a low around 30.

    Low: 30 °F

    Slight Chance
    Snow then
    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 35. South southwest wind 7 to 9 mph.
New Year's Day
Partly sunny, with a high near 41. Southwest wind 9 to 11 mph.
Thursday Night
Mostly cloudy, with a low around 32. Southwest wind 14 to 16 mph, with gusts as high as 23 mph.
Friday
A slight chance of snow before 11am, then a slight chance of rain and snow. Partly sunny, with a high near 42. Breezy, with a southwest wind 16 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 36. West southwest wind 16 to 21 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 10%.
Saturday
A chance of rain and snow, mainly after 11am. Partly sunny, with a high near 42. Southwest wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 33. Southwest wind 9 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Sunday
A chance of rain and snow before 8am, then a chance of snow. Partly sunny, with a high near 41. West southwest wind 11 to 14 mph, with gusts as high as 30 mph.
Sunday Night
A slight chance of snow before 11pm. Mostly cloudy, with a low around 30.
Monday
A chance of snow, mainly after 11am. Partly sunny, with a high near 38.
Monday Night
A slight chance of snow. Mostly cloudy, with a low around 29.
Tuesday
A slight chance of snow. Partly sunny, with a high near 38.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 28.
Wednesday
A chance of snow. Partly sunny, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
St Mary MT
 48.74°N 113.44°W (Elev. 4554 ft)
Last Update:
10:58 pm MST Dec 31, 2025
Forecast Valid:
1am MST Jan 1, 2026-6pm MST Jan 7, 2026
 
Forecast Discussion
 
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Additional Resources

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