Mackay Reservoir Weather Forecast

    • 33
    • 53

    Increasing Clouds

    • 26
    • 55

    Rain Showers Likely

    • 26
    • 48

    Mostly Sunny

    • 31
    • 56

    Mostly Sunny

    • 33
    • 58

    Partly Sunny

    • 35
    • 59

    Partly Sunny

Today 18 Oct Lost River Valleys

Sunny. Highs 49 to 59. Northwest Winds up to 10 Mph. Shifting to south in the afternoon.

Tonight 18 Oct Lost River Valleys

Partly cloudy. Lows 30 to 38. South Winds 10 to 15 Mph.

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Mackay Reservoir Temperature Statistics

October Temperature

Hailey, Friedman Memorial Airport (43.5 miles)

  • Lowest 12 October, 2025

    32 °F

  • Average October

    46 °F

  • Highest 9 October, 2025

    71.6 °F

Climate (2020–Present)

Hailey, Friedman Memorial Airport (43.5 miles)

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  • Average Low 2020–2025

    34 °F

  • Average 2020–2025

    42.2 °F

  • Average High 2020–2025

    55.8 °F
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