Upper Seymour Lake Weather Forecast

    • 44
    • 58

    Decreasing Clouds

    • 44
    • 63

    Slight Chance Thunderstorms

    • 36
    • 54

    Rain Showers Likely

    • 37
    • 51

    Chance Thunderstorms

    • 42
    • 57

    Partly Sunny

    • 45
    • 61

    Mostly Sunny

Today 5 Aug Butte/Blackfoot Region

Mostly sunny in the morning then becoming mostly cloudy. Haze until late afternoon. Highs in the 70s. West Winds to 15 Mph in the afternoon.

Tonight 5 Aug Butte/Blackfoot Region

Mostly clear. Lows in the mid 40s to lower 50s. West Winds to 15 Mph.

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Upper Seymour Lake Temperature Statistics

August Temperature

Butte, Bert Mooney Airport (37.3 miles)

  • Lowest 3 August, 2025

    45 °F

  • Average August

    61.8 °F

  • Highest 3 August, 2025

    79 °F

Climate (2020–Present)

Butte, Bert Mooney Airport (37.3 miles)

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  • Average Low 2020–2025

    27.7 °F

  • Average 2020–2025

    41.6 °F

  • Average High 2020–2025

    55 °F
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