NWS Forecast for: St Mary MT
Issued by: National Weather Service Great Falls, MT
Last Update: 2:59 am MDT Jul 2, 2022
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  • Overnight

    Overnight: Mostly clear, with a steady temperature around 50. North northeast wind 3 to 5 mph.

    Mostly Clear



    Low: 50 °F

  • Saturday

    Saturday: A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 71. North wind 5 to 8 mph.  Chance of precipitation is 20%.

    Mostly Sunny
    then Slight
    Chance
    T-storms

    High: 71 °F

  • Saturday
    Night

    Saturday Night: A 50 percent chance of showers and thunderstorms, mainly after 2am.  Increasing clouds, with a low around 49. North northeast wind around 7 mph.

    Slight Chance
    T-storms then
    Chance
    Showers

    Low: 49 °F

  • Sunday

    Sunday: Showers and possibly a thunderstorm.  High near 58. North northeast wind 6 to 9 mph, with gusts as high as 20 mph.  Chance of precipitation is 80%.

    Showers



    High: 58 °F

  • Sunday
    Night

    Sunday Night: Showers likely and possibly a thunderstorm.  Cloudy, with a low around 48. North northeast wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 70%.

    Showers
    Likely


    Low: 48 °F

  • Independence
    Day

    Independence Day: Showers and possibly a thunderstorm.  High near 64. East wind 5 to 7 mph becoming southwest in the afternoon.  Chance of precipitation is 80%.

    Showers



    High: 64 °F

  • Monday
    Night

    Monday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers.  Mostly cloudy, with a low around 45. West southwest wind 3 to 6 mph.  Chance of precipitation is 50%.

    Chance
    T-storms then
    Slight Chance
    Showers

    Low: 45 °F

  • Tuesday

    Tuesday: A slight chance of showers after noon.  Mostly sunny, with a high near 68. Southwest wind 7 to 14 mph, with gusts as high as 21 mph.

    Mostly Sunny
    then Slight
    Chance
    Showers

    High: 68 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 45.

    Partly Cloudy



    Low: 45 °F

  • Overnight: Mostly clear, with a steady temperature around 50. North northeast wind 3 to 5 mph.

    Saturday: A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 71. North wind 5 to 8 mph. Chance of precipitation is 20%.

    Saturday Night: A 50 percent chance of showers and thunderstorms, mainly after 2am. Increasing clouds, with a low around 49. North northeast wind around 7 mph.

    Sunday: Showers and possibly a thunderstorm. High near 58. North northeast wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    Sunday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 48. North northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%.

    Independence Day: Showers and possibly a thunderstorm. High near 64. East wind 5 to 7 mph becoming southwest in the afternoon. Chance of precipitation is 80%.

    Monday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 45. West southwest wind 3 to 6 mph. Chance of precipitation is 50%.

    Tuesday: A slight chance of showers after noon. Mostly sunny, with a high near 68. Southwest wind 7 to 14 mph, with gusts as high as 21 mph.

    Tuesday Night: Partly cloudy, with a low around 45.

    Wednesday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 74.

    Wednesday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 50.

    Thursday: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 77.

    Thursday Night: Mostly clear, with a low around 53.

    Friday: A slight chance of showers and thunderstorms. Sunny, with a high near 79.



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

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