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

Severe Thunderstorm, Flooding, and Winter Weather Threats on Tuesday

Scattered severe thunderstorms are forecast Tuesday from the southern Plains into the southern Great Lakes vicinity. Thunderstorms may also produce heavy to excessive rain that could pose a flooding threat from central Texas into southern Oklahoma and northern Missouri into southern Michigan. A heavy wintry mix is forecast for the Great Lakes into northern Maine. Read More >

Hazardous Weather Conditions

Current conditions at

ST. MARY (SRYM8)

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

NA

19°F

-7°C

Humidity 77%
Wind Speed ESE 4 MPH
Barometer NA
Dewpoint 13°F (-11°C)
Visibility NA
Wind Chill13°F (-11°C)
Last update 09 Mar 11:11 PM MDT
Extended Forecast for

7 Miles S St Mary MT

Winter Storm Watch March 11, 06:00pm until March 13, 06:00pm
High Wind Watch March 11, 06:00pm until March 12, 06:00pm
Click here for hazard details and duration
Winter Storm Watch
High Wind Watch

  • Tonight

    Tonight: Snow likely, mainly after 5am. Patchy blowing snow. Increasing clouds, with a low around 7. Wind chill values as low as -15. Breezy, with a west southwest wind 21 to 24 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.

    Low: 7 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Tuesday

    Tuesday: Snow, mainly before 3pm. High near 13. Wind chill values as low as -15. Windy, with a west wind 21 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 13 °F

    Snow and
    Windy

  • Tuesday Night

    Tuesday Night: A chance of snow before 9pm, then a chance of snow after 2am. Mostly cloudy, with a low around 9. Wind chill values as low as -15. Windy, with a west southwest wind 29 to 31 mph, with gusts as high as 39 mph. Chance of precipitation is 40%. New snow accumulation of 1 to 2 inches possible.

    Low: 9 °F

    Chance Snow
    and Windy

  • Wednesday

    Wednesday: Snow. High near 22. Wind chill values as low as -10. Windy, with a west southwest wind 30 to 36 mph, with gusts as high as 48 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 22 °F

    Snow and
    Windy

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times. Widespread blowing snow. Low around 20. Very windy, with a west southwest wind 32 to 37 mph increasing to 45 to 50 mph after midnight. Winds could gust as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.

    Low: 20 °F

    Heavy Snow
    and Blowing
    Snow

  • Thursday

    Thursday: Snow. The snow could be heavy at times. Widespread blowing snow. High near 24. Strong and damaging winds, with a west southwest wind 55 to 60 mph decreasing to 48 to 53 mph in the afternoon. Winds could gust as high as 70 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    High: 24 °F

    Heavy Snow
    and Blowing
    Snow

  • Thursday Night

    Thursday Night: Snow. The snow could be heavy at times. Low around 15. Windy, with a west wind 36 to 41 mph decreasing to 23 to 28 mph after midnight. Winds could gust as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    Low: 15 °F

    Heavy Snow
    and Windy

  • Friday

    Friday: Snow. The snow could be heavy at times. Cloudy, with a high near 18. Breezy, with a west wind 21 to 24 mph, with gusts as high as 36 mph.

    High: 18 °F

    Heavy Snow
    and Breezy

  • Friday Night

    Friday Night: Snow. The snow could be heavy at times. Cloudy, with a low around 6. Breezy.

    Low: 6 °F

    Heavy Snow
    and Breezy

Detailed Forecast

Tonight
Snow likely, mainly after 5am. Patchy blowing snow. Increasing clouds, with a low around 7. Wind chill values as low as -15. Breezy, with a west southwest wind 21 to 24 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.
Tuesday
Snow, mainly before 3pm. High near 13. Wind chill values as low as -15. Windy, with a west wind 21 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Tuesday Night
A chance of snow before 9pm, then a chance of snow after 2am. Mostly cloudy, with a low around 9. Wind chill values as low as -15. Windy, with a west southwest wind 29 to 31 mph, with gusts as high as 39 mph. Chance of precipitation is 40%. New snow accumulation of 1 to 2 inches possible.
Wednesday
Snow. High near 22. Wind chill values as low as -10. Windy, with a west southwest wind 30 to 36 mph, with gusts as high as 48 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Wednesday Night
Snow. The snow could be heavy at times. Widespread blowing snow. Low around 20. Very windy, with a west southwest wind 32 to 37 mph increasing to 45 to 50 mph after midnight. Winds could gust as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.
Thursday
Snow. The snow could be heavy at times. Widespread blowing snow. High near 24. Strong and damaging winds, with a west southwest wind 55 to 60 mph decreasing to 48 to 53 mph in the afternoon. Winds could gust as high as 70 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Thursday Night
Snow. The snow could be heavy at times. Low around 15. Windy, with a west wind 36 to 41 mph decreasing to 23 to 28 mph after midnight. Winds could gust as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Friday
Snow. The snow could be heavy at times. Cloudy, with a high near 18. Breezy, with a west wind 21 to 24 mph, with gusts as high as 36 mph.
Friday Night
Snow. The snow could be heavy at times. Cloudy, with a low around 6. Breezy.
Saturday
Snow. The snow could be heavy at times. Cloudy, with a high near 13. Blustery.
Saturday Night
Snow likely. Mostly cloudy, with a low around 2.
Sunday
A slight chance of snow. Mostly cloudy, with a high near 16. Breezy.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 15. Windy.
Monday
A chance of snow. Mostly cloudy, with a high near 31. Windy.
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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:
10:47 pm MDT Mar 9, 2026
Forecast Valid:
11pm MDT Mar 9, 2026-6pm MDT Mar 16, 2026
 
Forecast Discussion
 
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