Tupper Lake Weather Forecast

    • 41
    • 74

    Rain Likely

    • 36
    • 60

    Chance Rain

    • 44
    • 71

    Mostly Sunny

    • 46
    • 79

    Chance Rain

    • 44
    • 70

    Chance Rain Showers

    • 42
    • 69

    Slight Chance Rain

Today 29 Aug Butte/Blackfoot Region

Areas of rain in the Morning, then rain Showers likely and a chance of Thunderstorms in the afternoon. Patchy smoke early in the morning. Patchy smoke late in the afternoon. Chance of precipitation 70 percent. Highs in the upper 60s to mid 70s. Southwest Winds to 15 Mph.

Tonight 29 Aug Butte/Blackfoot Region

Mostly cloudy. Chance of Showers and Thunderstorms in the Evening, then a chance of rain after midnight. Chance of precipitation 50 percent. Lows in the mid 30s to lower 40s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tupper Lake Temperature Statistics

August Temperature

Helena Regional Airport (52.2 miles)

  • Lowest 4 August, 2026

    45.6 °F

  • Average August

    71 °F

  • Highest 1 August, 2026

    103.6 °F

Climate (2021–2026)

Helena Regional Airport (52.2 miles)

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  • Average Low 2021–2026

    36.4 °F

  • Average 2021–2026

    48 °F

  • Average High 2021–2026

    60 °F
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