Upper Box Canyon Lake Weather Forecast

    • 55
    • 74

    Increasing Clouds

    • 52
    • 71

    Chance Thunderstorms

    • 48
    • 65

    Rain Showers

    • 50
    • 68

    Slight Chance Thunderstorms

    • 51
    • 71

    Mostly Sunny

    • 50
    • 70

    Mostly Sunny

    • 49
    • 71

    Mostly Sunny

Today 20 Jul Sun Valley Region

Mostly sunny. A slight chance of rain in the afternoon. Highs 84 to 93.

Tonight 20 Jul Sun Valley Region

Increasing Clouds. A slight chance of rain. Lows 57 to 67.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Upper Box Canyon Lake Temperature Statistics

July Temperature

Hailey, Friedman Memorial Airport (19.3 miles)

  • Lowest 1 July, 2026

    46.4 °F

  • Average July

    67.5 °F

  • Highest 12 July, 2026

    95 °F

Climate (2021–2026)

Hailey, Friedman Memorial Airport (19.3 miles)

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  • Average Low 2021–2026

    34.7 °F

  • Average 2021–2026

    43.2 °F

  • Average High 2021–2026

    56.5 °F
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