Lower Box Canyon Lake Weather Forecast

    • 39
    • 56

    Partly Cloudy

    • 33
    • 57

    Partly Sunny

    • 29
    • 44

    Snow Showers Likely

    • 37
    • 53

    Partly Sunny

    • 42
    • 58

    Mostly Cloudy

    • 41
    • 57

    Chance Rain

Today 5 Sep Big Lost Highlands/Copper Basin

Mostly sunny. A chance of rain in the morning. Then a slight chance of Showers and Thunderstorms in the afternoon. Warmer. Highs 65 to 75.

Tonight 5 Sep Big Lost Highlands/Copper Basin

Partly cloudy. A chance of rain Showers and a slight chance of Thunderstorms after midnight. Lows 38 to 48.

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  • Temperature Real-Time

Lower Box Canyon Lake Temperature Statistics

September Temperature

Hailey, Friedman Memorial Airport (19.3 miles)

  • Lowest 1 September, 2026

    46.4 °F

  • Average September

    57.5 °F

  • Highest 1 September, 2026

    77 °F

Climate (2021–2026)

Hailey, Friedman Memorial Airport (19.3 miles)

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  • Average Low 2021–2026

    34.8 °F

  • Average 2021–2026

    43.3 °F

  • Average High 2021–2026

    56.7 °F
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