Tupper Lake Weather Forecast

    • 34
    • 59

    Chance Rain Showers

    • 35
    • 57

    Rain Showers

    • 35
    • 59

    Partly Sunny

    • 39
    • 66

    Partly Sunny

    • 42
    • 70

    Partly Sunny

    • 44
    • 73

    Partly Sunny

    • 41
    • 71

    Partly Sunny

Today 19 May Butte/Blackfoot Region

Partly cloudy. Widespread frost early in the morning. Slight chance of rain and snow early in the afternoon. Slight chance of rain late in the afternoon. Chance of precipitation 20 percent. Highs in the mid 50s to lower 60s.

Tonight 19 May Butte/Blackfoot Region

Mostly cloudy with a 20 percent chance of rain in the Evening, then partly cloudy after midnight. Lows in the upper 20s to mid 30s. Northwest Winds to 15 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tupper Lake Temperature Statistics

May Temperature

Helena Regional Airport (52.2 miles)

  • Lowest 6 May, 2026

    27.6 °F

  • Average May

    54.8 °F

  • Highest 13 May, 2026

    84.7 °F

Climate (2021–Present)

Helena Regional Airport (52.2 miles)

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  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    60.1 °F
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