Mackay Reservoir Weather Forecast

    • 41
    • 65

    Partly Sunny

    • 37
    • 66

    Rain

    • 32
    • 46

    Rain/Snow

    • 24
    • 45

    Rain/Snow Likely

    • 23
    • 38

    Chance Snow

    • 23
    • 40

    Partly Sunny

    • 27
    • 45

    Partly Sunny

Today 20 Apr Lost River Valleys

Mostly sunny. Highs 64 to 74. Southeast Winds up to 10 Mph. Shifting to south in the afternoon.

Tonight 20 Apr Lost River Valleys

Partly cloudy. Lows 38 to 46. South Winds up to 10 Mph.

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Mackay Reservoir Temperature Statistics

April Temperature

Hailey, Friedman Memorial Airport (43.5 miles)

  • Lowest 17 April, 2026

    21.2 °F

  • Average April

    46.6 °F

  • Highest 6 April, 2026

    71.6 °F

Climate (2021–Present)

Hailey, Friedman Memorial Airport (43.5 miles)

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  • Average Low 2021–2026

    34.7 °F

  • Average 2021–2026

    43 °F

  • Average High 2021–2026

    56.6 °F
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