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

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

NA

49°F

9°C

Humidity 55%
Wind Speed NA 5 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Wind Chill47°F (8°C)
Last update 09 Jun 04:10 AM MDT
Extended Forecast for

St Mary MT

  • Today

    Today: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 57. Southwest wind 7 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 50%.

    High: 57 °F

    Chance
    Showers

  • Tonight

    Tonight: A 50 percent chance of showers. Mostly cloudy, with a low around 38. Southwest wind 16 to 18 mph, with gusts as high as 40 mph.

    Low: 38 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Rain and snow showers likely before 1pm, then rain showers. High near 49. West southwest wind around 17 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 49 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before midnight. Mostly cloudy, with a low around 38. West southwest wind 9 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    Low: 38 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 61. West southwest wind 8 to 13 mph, with gusts as high as 24 mph.

    High: 61 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 40. West southwest wind 5 to 11 mph, with gusts as high as 24 mph.

    Low: 40 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 65. West southwest wind 3 to 8 mph. Chance of precipitation is 50%.

    High: 65 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 42. West wind 5 to 7 mph becoming calm after midnight.

    Low: 42 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 63.

    High: 63 °F

    Chance
    Showers

Detailed Forecast

Today
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 57. Southwest wind 7 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 50%.
Tonight
A 50 percent chance of showers. Mostly cloudy, with a low around 38. Southwest wind 16 to 18 mph, with gusts as high as 40 mph.
Wednesday
Rain and snow showers likely before 1pm, then rain showers. High near 49. West southwest wind around 17 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Wednesday Night
Showers likely, mainly before midnight. Mostly cloudy, with a low around 38. West southwest wind 9 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 61. West southwest wind 8 to 13 mph, with gusts as high as 24 mph.
Thursday Night
Mostly clear, with a low around 40. West southwest wind 5 to 11 mph, with gusts as high as 24 mph.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 65. West southwest wind 3 to 8 mph. Chance of precipitation is 50%.
Friday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 42. West wind 5 to 7 mph becoming calm after midnight.
Saturday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 63.
Saturday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 42.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 67.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 45.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 71.
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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:
3:43 am MDT Jun 9, 2026
Forecast Valid:
4am MDT Jun 9, 2026-6pm MDT Jun 15, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation