Squaw Lake Weather Forecast

    • 38
    • 46

    Rain Showers Likely

    • 40
    • 58

    Partly Sunny

    • 43
    • 61

    Mostly Sunny

    • 45
    • 62

    Mostly Sunny

    • 44
    • 62

    Mostly Sunny

    • 45
    • 64

    Mostly Sunny

    • 43
    • 63

    Partly Sunny

Today 19 Sep Northwest Beaverhead County

Rain Showers likely and chance of Thunderstorms. Near steady temperature in the upper 40s. Northeast Winds up to 10 Mph. Chance of precipitation 70 percent.

Tonight 19 Sep Northwest Beaverhead County

Mostly cloudy with a 50 percent chance of rain in the Evening, then partly cloudy after midnight. Patchy fog after midnight. Lows 33 to 39. North Winds up to 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Squaw Lake Temperature Statistics

September Temperature

Butte, Bert Mooney Airport (37.3 miles)

  • Lowest 15 September, 2026

    27.6 °F

  • Average September

    55.2 °F

  • Highest 1 September, 2026

    79.6 °F

Climate (2021–2026)

Butte, Bert Mooney Airport (37.3 miles)

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  • Average Low 2021–2026

    28.5 °F

  • Average 2021–2026

    42.3 °F

  • Average High 2021–2026

    55.7 °F
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