NWS Forecast for: Helena MT
Issued by: National Weather Service Great Falls, MT
Last Update: 2:12 pm MDT May 12, 2021
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  • Tonight

    Tonight: A 30 percent chance of rain, mainly between midnight and 2am.  Mostly cloudy, with a low around 7. West southwest wind 10 to 13 km/h.

    Chance Rain


    Low: 7 °C

  • Thursday

    Thursday: A slight chance of rain between 10am and 5pm.  Mostly sunny, with a high near 22. West wind 8 to 13 km/h becoming west northwest 22 to 27 km/h in the afternoon. Winds could gust as high as 40 km/h.  Chance of precipitation is 20%.

    Slight Chance
    Rain

    High: 22 °C

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 6. West wind 16 to 21 km/h decreasing to 10 to 15 km/h after midnight. Winds could gust as high as 29 km/h.

    Mostly Cloudy


    Low: 6 °C

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after noon.  Mostly cloudy, with a high near 20. West northwest wind 10 to 16 km/h becoming north in the afternoon.

    Partly Sunny
    then Chance
    Showers

    High: 20 °C

  • Friday
    Night

    Friday Night: A chance of showers and thunderstorms before midnight, then a slight chance of rain after midnight.  Mostly cloudy, with a low around 6. North wind 10 to 18 km/h becoming west northwest after midnight.  Chance of precipitation is 30%.

    Chance
    Showers

    Low: 6 °C

  • Saturday

    Saturday: A slight chance of rain, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 21. West wind 8 to 13 km/h becoming north in the afternoon.  Chance of precipitation is 30%.

    Chance
    Showers

    High: 21 °C

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 6. North wind 11 to 16 km/h becoming southwest 5 to 10 km/h after midnight.

    Mostly Clear


    Low: 6 °C

  • Sunday

    Sunday: Sunny, with a high near 25. Light and variable wind becoming east 6 to 11 km/h in the afternoon.

    Sunny


    High: 25 °C

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 8.

    Mostly Clear


    Low: 8 °C

  • Tonight: A 30 percent chance of rain, mainly between midnight and 2am. Mostly cloudy, with a low around 7. West southwest wind 10 to 13 km/h.

    Thursday: A slight chance of rain between 10am and 5pm. Mostly sunny, with a high near 22. West wind 8 to 13 km/h becoming west northwest 22 to 27 km/h in the afternoon. Winds could gust as high as 40 km/h. Chance of precipitation is 20%.

    Thursday Night: Mostly cloudy, with a low around 6. West wind 16 to 21 km/h decreasing to 10 to 15 km/h after midnight. Winds could gust as high as 29 km/h.

    Friday: A 30 percent chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 20. West northwest wind 10 to 16 km/h becoming north in the afternoon.

    Friday Night: A chance of showers and thunderstorms before midnight, then a slight chance of rain after midnight. Mostly cloudy, with a low around 6. North wind 10 to 18 km/h becoming west northwest after midnight. Chance of precipitation is 30%.

    Saturday: A slight chance of rain, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 21. West wind 8 to 13 km/h becoming north in the afternoon. Chance of precipitation is 30%.

    Saturday Night: Mostly clear, with a low around 6. North wind 11 to 16 km/h becoming southwest 5 to 10 km/h after midnight.

    Sunday: Sunny, with a high near 25. Light and variable wind becoming east 6 to 11 km/h in the afternoon.

    Sunday Night: Mostly clear, with a low around 8.

    Monday: Sunny, with a high near 28.

    Monday Night: Partly cloudy, with a low around 9.

    Tuesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 25.

    Tuesday Night: A chance of rain and thunderstorms. Mostly cloudy, with a low around 5.

    Wednesday: A chance of rain. Partly sunny, with a high near 17.



    Helena MT
     46.61°N 111.96°W (Elev. 1157 m)

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