Window Lake Weather Forecast

    • 29
    • 40

    Increasing Clouds

    • 25
    • 43

    Chance Rain/Snow

    • 28
    • 43

    Partly Sunny

    • 31
    • 45

    Slight Chance Thunderstorms

    • 35
    • 50

    Mostly Sunny

    • 38
    • 53

    Partly Sunny

    • 38
    • 54

    Partly Sunny

Today 21 May Sun Valley Region

Sunny. Highs 53 to 63.

Tonight 21 May Sun Valley Region

Mostly cloudy. Lows 34 to 41.

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Window Lake Temperature Statistics

May Temperature

Hailey, Friedman Memorial Airport (26.1 miles)

  • Lowest 15 May, 2025

    32 °F

  • Average May

    48 °F

  • Highest 10 May, 2025

    80.6 °F

Climate (2020–Present)

Hailey, Friedman Memorial Airport (26.1 miles)

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  • Average Low 2020–2025

    33.8 °F

  • Average 2020–2025

    42.1 °F

  • Average High 2020–2025

    55.8 °F
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