Big Lake Weather Forecast

    • 33
    • 45

    Rain/Snow

    • 31
    • 46

    Partly Sunny

    • 32
    • 48

    Mostly Sunny

    • 37
    • 54

    Mostly Sunny

    • 39
    • 57

    Partly Sunny

    • 37
    • 55

    Breezy

Today 30 May Big Lost Highlands/Copper Basin

Mostly cloudy. A chance of rain Showers and a slight chance of Thunderstorms in the afternoon. Highs 54 to 64.

Tonight 30 May Big Lost Highlands/Copper Basin

Mostly cloudy. A chance of rain Showers and a slight chance of Thunderstorms in the evening. Colder. Lows 33 to 43.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Lake Temperature Statistics

May Temperature

Hailey, Friedman Memorial Airport (26.7 miles)

  • Lowest 6 May, 2026

    32 °F

  • Average May

    61.7 °F

  • Highest 12 May, 2026

    84.2 °F

Climate (2021–Present)

Hailey, Friedman Memorial Airport (26.7 miles)

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  • Average Low 2021–2026

    34.8 °F

  • Average 2021–2026

    43.2 °F

  • Average High 2021–2026

    56.7 °F
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