Mackay Reservoir Weather Forecast

    • 40
    • 60

    Slight Chance Rain

    • 39
    • 58

    Rain

    • 29
    • 46

    Rain

    • 29
    • 46

    Mostly Sunny

    • 31
    • 51

    Mostly Sunny

    • 29
    • 50

    Partly Sunny

    • 27
    • 48

    Partly Sunny

Today 21 Oct Lost River Valleys

Sunny. Highs 44 to 53.

Tonight 21 Oct Lost River Valleys

Partly cloudy. Lows 39 to 46. Southeast Winds up to 10 Mph in the evening. Becoming light and variable.

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Mackay Reservoir Temperature Statistics

October Temperature

Hailey, Friedman Memorial Airport (43.5 miles)

  • Lowest 14 October, 2026

    32 °F

  • Average October

    50 °F

  • Highest 4 October, 2026

    80.6 °F

Climate (2021–2026)

Hailey, Friedman Memorial Airport (43.5 miles)

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  • Average Low 2021–2026

    34.9 °F

  • Average 2021–2026

    43.4 °F

  • Average High 2021–2026

    56.8 °F
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