Lower Box Canyon Lake Weather Forecast

    • 48
    • 68

    Slight Chance Thunderstorms

    • 52
    • 71

    Mostly Sunny

    • 46
    • 71

    Mostly Sunny

    • 46
    • 69

    Mostly Sunny

    • 50
    • 71

    Mostly Sunny

    • 51
    • 72

    Slight Chance Thunderstorms

    • 48
    • 68

    Chance Rain Showers

Today 18 Aug Big Lost Highlands/Copper Basin

Sunny. A slight chance of Showers and Thunderstorms in the afternoon. Warmer. Highs 76 to 86.

Tonight 18 Aug Big Lost Highlands/Copper Basin

Mostly clear. Lows 48 to 58.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lower Box Canyon Lake Temperature Statistics

August Temperature

Hailey, Friedman Memorial Airport (19.3 miles)

  • Lowest 8 August, 2025

    44.6 °F

  • Average August

    64.2 °F

  • Highest 12 August, 2025

    89.6 °F

Climate (2020–Present)

Hailey, Friedman Memorial Airport (19.3 miles)

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  • Average Low 2020–2025

    33.9 °F

  • Average 2020–2025

    42.2 °F

  • Average High 2020–2025

    55.9 °F
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