Arrowhead Lake Weather Forecast

    • 34
    • 39

    Chance Rain/Snow

    • 28
    • 38

    Snow

    • 22
    • 34

    Snow

    • 21
    • 27

    Mostly Sunny

    • 24
    • 32

    Mostly Sunny

    • 22
    • 31

    Slight Chance Snow

    • 20
    • 27

    Mostly Sunny

Today 21 Oct Sun Valley Region

Sunny. Highs 44 to 53.

Tonight 21 Oct Sun Valley Region

Partly cloudy in the evening. Then mostly cloudy with a slight chance of rain after midnight. Lows 37 to 47.

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Arrowhead Lake Temperature Statistics

October Temperature

Hailey, Friedman Memorial Airport (19.3 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 (19.3 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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