Tupper Lake Weather Forecast

    • 44
    • 79

    Chance Thunderstorms

    • 39
    • 59

    Rain

    • 37
    • 48

    Rain

    • 37
    • 54

    Rain Showers Likely

    • 39
    • 62

    Chance Rain

    • 42
    • 70

    Partly Sunny

    • 41
    • 68

    Slight Chance Thunderstorms

Today 29 May Butte/Blackfoot Region

Mostly sunny in the Morning, then mostly cloudy with a 50 percent chance of Showers and Thunderstorms in the afternoon. Highs in the 70s to lower 80s. Southwest Winds to 15 Mph in the afternoon.

Tonight 29 May Butte/Blackfoot Region

Mostly cloudy. Chance of Showers and Thunderstorms early in the Evening, then Areas of rain in the late evening and overnight. Chance of precipitation 50 percent. Lows in the 40s. 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

    55.6 °F

  • Highest 25 May, 2026

    86.6 °F

Climate (2021–Present)

Helena Regional Airport (52.2 miles)

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  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    60.2 °F
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