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

Atmospheric River Continues to Impact the Northwest U.S.; Gusty to High Winds in the Northeast U.S.

A strong atmospheric river will continue moderate to heavy rainfall with possible flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. into Thursday. Additional impacts are likely into Friday with a cold front. A fast-moving storm system will cross the Northeast U.S. Wednesday into Thursday with gusty to high winds and areas of rain and high elevation snow showers. Read More >

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

NA

26°F

-3°C

Humidity 89%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 24°F (-4°C)
Visibility NA
Last update 04 Nov 09:10 PM MST
Extended Forecast for

St Mary MT

  • Tonight

    Tonight: A slight chance of rain and snow after 5am. Mostly cloudy, with a low around 27. South southwest wind around 6 mph. Chance of precipitation is 10%.

    Low: 27 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A chance of rain and snow before 8am, then a chance of rain after 3pm. Mostly cloudy, with a high near 52. South wind 5 to 8 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 52 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain likely. Mostly cloudy, with a low around 36. West southwest wind 10 to 18 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 36 °F

    Rain Likely

  • Thursday

    Thursday: A 50 percent chance of rain. Partly sunny, with a high near 43. West southwest wind 16 to 20 mph, with gusts as high as 47 mph.

    High: 43 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A slight chance of rain before 8pm, then a chance of rain and snow. Mostly cloudy, with a low around 33. West southwest wind 14 to 16 mph, with gusts as high as 38 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 33 °F

    Chance
    Rain/Snow

  • Friday

    Friday: Rain and snow, becoming all snow after 11am. High near 41. Southwest wind 14 to 17 mph, with gusts as high as 38 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Rain/Snow
    then Snow
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 27. West southwest wind 11 to 15 mph, with gusts as high as 34 mph. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 39. West southwest wind 8 to 10 mph, with gusts as high as 23 mph.

    High: 39 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of rain and snow after 5am. Mostly cloudy, with a low around 27. South southwest wind around 6 mph. Chance of precipitation is 10%.
Wednesday
A chance of rain and snow before 8am, then a chance of rain after 3pm. Mostly cloudy, with a high near 52. South wind 5 to 8 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 36. West southwest wind 10 to 18 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A 50 percent chance of rain. Partly sunny, with a high near 43. West southwest wind 16 to 20 mph, with gusts as high as 47 mph.
Thursday Night
A slight chance of rain before 8pm, then a chance of rain and snow. Mostly cloudy, with a low around 33. West southwest wind 14 to 16 mph, with gusts as high as 38 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Friday
Rain and snow, becoming all snow after 11am. High near 41. Southwest wind 14 to 17 mph, with gusts as high as 38 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday Night
A 30 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 27. West southwest wind 11 to 15 mph, with gusts as high as 34 mph. New snow accumulation of less than a half inch possible.
Saturday
Partly sunny, with a high near 39. West southwest wind 8 to 10 mph, with gusts as high as 23 mph.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
Partly sunny, with a high near 47.
Sunday Night
Mostly cloudy, with a low around 35.
Monday
A slight chance of rain and snow. Partly sunny, with a high near 51.
Monday Night
A chance of rain and snow. Mostly cloudy, with a low around 34.
Veterans Day
A slight chance of rain and snow. Partly sunny, with a high near 45.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
St Mary MT
 48.76°N 113.44°W (Elev. 4741 ft)
Last Update:
3:37 pm MST Nov 4, 2025
Forecast Valid:
9pm MST Nov 4, 2025-6pm MST Nov 11, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation