Arco-Butte County Airport Weather Forecast

    • 40
    • 75

    Mostly Sunny

    • 42
    • 80

    Mostly Sunny

    • 48
    • 83

    Breezy

    • 43
    • 77

    Breezy

    • 39
    • 73

    Partly Sunny

    • 35
    • 62

    Partly Sunny

Today 8 Sep Lost River Valleys

Sunny. Highs 64 to 74. Light and variable Winds. Becoming northwest 10 to 15 Mph in the afternoon.

Tonight 8 Sep Lost River Valleys

Mostly clear. Lows 37 to 45. Northwest Winds around 10 Mph in the evening. Becoming light and variable.

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Arco-Butte County Airport Temperature Statistics

September Temperature

Hailey, Friedman Memorial Airport (48.5 miles)

  • Lowest 3 September, 2026

    42.8 °F

  • Average September

    56.5 °F

  • Highest 1 September, 2026

    77 °F

Climate (2021–2026)

Hailey, Friedman Memorial Airport (48.5 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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