Tupper Lake Weather Forecast

    • 43
    • 60

    Chance Rain

    • 44
    • 71

    Slight Chance Rain

    • 44
    • 76

    Sunny

    • 45
    • 78

    Mostly Sunny

    • 46
    • 78

    Partly Sunny

    • 47
    • 78

    Partly Sunny

Today 15 Sep Butte/Blackfoot Region

Mostly cloudy. Chance of rain Showers in the Morning, then chance of rain Showers and a slight chance of Thunderstorms in the afternoon. Chance of precipitation 50 percent. Cooler. Highs in the mid 50s to lower 60s.

Tonight 15 Sep Butte/Blackfoot Region

Partly cloudy with a 20 percent chance of rain. Patchy fog after midnight. Lows in the mid 30s to lower 40s.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Tupper Lake Temperature Statistics

September Temperature

Helena Regional Airport (52.2 miles)

  • Lowest 5 September, 2025

    46 °F

  • Average September

    66 °F

  • Highest 3 September, 2025

    91.9 °F

Climate (2020–Present)

Helena Regional Airport (52.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    36.1 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    59.4 °F
Get WillyWeather+ to remove ads