NWS Forecast for: St Mary MT
Issued by: National Weather Service Great Falls, MT
Last Update: 4:54 am MDT Oct 4, 2023
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  • Today

    Today: A 20 percent chance of showers after 3pm.  Mostly sunny, with a high near 55. West southwest wind 14 to 20 mph, with gusts as high as 30 mph.

    Mostly Sunny
    then Slight
    Chance
    Showers

    High: 55 °F

  • Tonight

    Tonight: A slight chance of showers before 7pm, then a slight chance of showers after 4am.  Mostly cloudy, with a low around 33. West northwest wind 6 to 11 mph becoming light and variable  after midnight. Winds could gust as high as 18 mph.  Chance of precipitation is 20%.

    Slight Chance
    Showers


    Low: 33 °F

  • Thursday

    Thursday: Partly sunny, with a high near 51. Calm wind becoming north 5 to 8 mph in the afternoon.

    Partly Sunny



    High: 51 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 29. North northeast wind 5 to 7 mph becoming calm  after midnight.

    Partly Cloudy



    Low: 29 °F

  • Friday

    Friday: Sunny, with a high near 63. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    Sunny



    High: 63 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 39. West southwest wind 6 to 8 mph.

    Mostly Clear



    Low: 39 °F

  • Saturday

    Saturday: Sunny, with a high near 67. West southwest wind 8 to 14 mph, with gusts as high as 20 mph.

    Sunny



    High: 67 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 44. West southwest wind 11 to 14 mph, with gusts as high as 21 mph.

    Mostly Clear



    Low: 44 °F

  • Sunday

    Sunday: Sunny, with a high near 67.

    Sunny



    High: 67 °F

  • Today: A 20 percent chance of showers after 3pm. Mostly sunny, with a high near 55. West southwest wind 14 to 20 mph, with gusts as high as 30 mph.

    Tonight: A slight chance of showers before 7pm, then a slight chance of showers after 4am. Mostly cloudy, with a low around 33. West northwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

    Thursday: Partly sunny, with a high near 51. Calm wind becoming north 5 to 8 mph in the afternoon.

    Thursday Night: Partly cloudy, with a low around 29. North northeast wind 5 to 7 mph becoming calm after midnight.

    Friday: Sunny, with a high near 63. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    Friday Night: Mostly clear, with a low around 39. West southwest wind 6 to 8 mph.

    Saturday: Sunny, with a high near 67. West southwest wind 8 to 14 mph, with gusts as high as 20 mph.

    Saturday Night: Mostly clear, with a low around 44. West southwest wind 11 to 14 mph, with gusts as high as 21 mph.

    Sunday: Sunny, with a high near 67.

    Sunday Night: Partly cloudy, with a low around 47.

    Columbus Day: Mostly sunny, with a high near 63.

    Monday Night: A slight chance of showers. Mostly cloudy, with a low around 44.

    Tuesday: A chance of showers. Partly sunny, with a high near 59.



    St Mary MT
     48.74°N 113.44°W (Elev. 4554 ft)

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