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National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 46.58°N 112.01°W (Text-Only)
NWS Forecast for: Helena MT
Issued by: National Weather Service Great Falls, MT
Last Update: 10:21 pm MDT Jun 29, 2026		Print

  • Overnight

    Overnight: A 30 percent chance of showers before 3am. Mostly cloudy, with a low around 48. West southwest wind 7 to 11 mph, with gusts as high as 21 mph.

    Low: 48 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 72. West southwest wind 3 to 6 mph.

    High: 72 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday
    Night

    Tuesday Night: A chance of showers and thunderstorms before 11pm, then showers likely between 11pm and midnight. Mostly cloudy, with a low around 50. Southwest wind 3 to 5 mph. Chance of precipitation is 60%.

    Low: 50 °F

    Showers
    Likely then
    Mostly Cloudy

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then showers and possibly a thunderstorm after 2pm. High near 72. Calm wind becoming west southwest around 6 mph in the afternoon. Chance of precipitation is 80%.

    High: 72 °F

    Chance
    Showers then
    Showers

  • Wednesday
    Night

    Wednesday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 48. West wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 40%.

    Low: 48 °F

    Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75. Calm wind becoming southwest 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 75 °F

    Sunny then
    Chance
    T-storms

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 50. West southwest wind 3 to 6 mph.

    Low: 50 °F

    Mostly Cloudy


  • Friday

    Friday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 75. Calm wind becoming west around 6 mph in the afternoon.

    High: 75 °F

    Mostly Sunny
    then Showers
    Likely

  • Friday
    Night

    Friday Night: A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 49.

    Low: 49 °F

    Slight Chance
    T-storms then
    Mostly Clear

    • Overnight: A 30 percent chance of showers before 3am. Mostly cloudy, with a low around 48. West southwest wind 7 to 11 mph, with gusts as high as 21 mph.

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 72. West southwest wind 3 to 6 mph.

    Tuesday Night: A chance of showers and thunderstorms before 11pm, then showers likely between 11pm and midnight. Mostly cloudy, with a low around 50. Southwest wind 3 to 5 mph. Chance of precipitation is 60%.

    Wednesday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then showers and possibly a thunderstorm after 2pm. High near 72. Calm wind becoming west southwest around 6 mph in the afternoon. Chance of precipitation is 80%.

    Wednesday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 48. West wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 40%.

    Thursday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75. Calm wind becoming southwest 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph.

    Thursday Night: Mostly cloudy, with a low around 50. West southwest wind 3 to 6 mph.

    Friday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 75. Calm wind becoming west around 6 mph in the afternoon.

    Friday Night: A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 49.

    Independence Day: Sunny, with a high near 79.

    Saturday Night: Mostly clear, with a low around 51.

    Sunday: Sunny, with a high near 83.

    Sunday Night: Partly cloudy, with a low around 55.

    Monday: Sunny, with a high near 86.


    Helena MT
     46.58°N 112.01°W (Elev. 4111 ft)

    Visit your local NWS office at: https://www.weather.gov/tfx