NWS Forecast for: St Mary MT
Issued by: National Weather Service Great Falls, MT
Last Update: 2:40 pm MDT Sep 20, 2019
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  • Tonight

    Tonight: Rain likely, mainly before 10pm.  Mostly cloudy, with a low around 3. West wind 8 to 11 km/h becoming north northwest after midnight.  Chance of precipitation is 70%. New precipitation amounts between 2.5 and 5 mm possible.

    Rain Likely
    then Chance
    Rain

    Low: 3 °C

  • Saturday

    Saturday: Sunny, with a high near 14. West southwest wind 8 to 13 km/h increasing to 18 to 23 km/h in the afternoon. Winds could gust as high as 37 km/h.

    Sunny


    High: 14 °C

  • Saturday
    Night

    Saturday Night: Mostly cloudy during the early evening, then becoming mostly clear, with a low around 4. West southwest wind around 16 km/h, with gusts as high as 42 km/h.

    Mostly Clear


    Low: 4 °C

  • Sunday

    Sunday: Sunny, with a high near 17. West southwest wind 18 to 23 km/h, with gusts as high as 48 km/h.

    Sunny


    High: 17 °C

  • Sunday
    Night

    Sunday Night: A 20 percent chance of rain after midnight.  Mostly cloudy, with a low around 6. Southwest wind 13 to 16 km/h, with gusts as high as 42 km/h.

    Mostly Cloudy
    then Slight
    Chance Rain

    Low: 6 °C

  • Monday

    Monday: A 20 percent chance of rain after noon.  Mostly sunny, with a high near 14.

    Partly Sunny
    then Slight
    Chance Rain

    High: 14 °C

  • Monday
    Night

    Monday Night: Mostly cloudy, with a low around 6.

    Mostly Cloudy


    Low: 6 °C

  • Tuesday

    Tuesday: A chance of rain after noon.  Partly sunny, with a high near 14.

    Partly Sunny
    then Chance
    Rain

    High: 14 °C

  • Tuesday
    Night

    Tuesday Night: A chance of rain before midnight.  Mostly cloudy, with a low around 2.

    Chance Rain
    then Mostly
    Cloudy

    Low: 2 °C

  • Tonight: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 3. West wind 8 to 11 km/h becoming north northwest after midnight. Chance of precipitation is 70%. New precipitation amounts between 2.5 and 5 mm possible.

    Saturday: Sunny, with a high near 14. West southwest wind 8 to 13 km/h increasing to 18 to 23 km/h in the afternoon. Winds could gust as high as 37 km/h.

    Saturday Night: Mostly cloudy during the early evening, then becoming mostly clear, with a low around 4. West southwest wind around 16 km/h, with gusts as high as 42 km/h.

    Sunday: Sunny, with a high near 17. West southwest wind 18 to 23 km/h, with gusts as high as 48 km/h.

    Sunday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 6. Southwest wind 13 to 16 km/h, with gusts as high as 42 km/h.

    Monday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 14.

    Monday Night: Mostly cloudy, with a low around 6.

    Tuesday: A chance of rain after noon. Partly sunny, with a high near 14.

    Tuesday Night: A chance of rain before midnight. Mostly cloudy, with a low around 2.

    Wednesday: A chance of rain after noon. Mostly sunny, with a high near 12.

    Wednesday Night: A chance of rain. Mostly cloudy, with a low around 1.

    Thursday: A chance of rain. Mostly cloudy, with a high near 9.

    Thursday Night: A chance of rain and snow. Mostly cloudy, with a low around -1.

    Friday: Rain and snow likely. Mostly cloudy, with a high near 7.



    St Mary MT
     48.76°N 113.44°W (Elev. 1445 m)

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