Lost River Weather Forecast

    • 41
    • 76

    Chance Rain Showers

    • 35
    • 65

    Slight Chance Thunderstorms

    • 42
    • 70

    Mostly Sunny

    • 46
    • 77

    Partly Sunny

    • 47
    • 78

    Partly Sunny

    • 45
    • 75

    Slight Chance Thunderstorms

Today 6 Sep Lost River Valleys

Sunny, breezy. Highs 70 to 80. Light and variable Winds. Becoming south 15 to 25 Mph in the afternoon.

Tonight 6 Sep Lost River Valleys

Mostly cloudy. A slight chance of Showers and Thunderstorms in the evening. Then a chance of rain Showers and a slight chance of Thunderstorms after midnight. Lows 40 to 49. South Winds 10 to 20 Mph.

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  • Temperature Real-Time

Lost River Temperature Statistics

September Temperature

Hailey, Friedman Memorial Airport (40.4 miles)

  • Lowest 3 September, 2026

    42.8 °F

  • Average September

    55.6 °F

  • Highest 1 September, 2026

    77 °F

Climate (2021–2026)

Hailey, Friedman Memorial Airport (40.4 miles)

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  • Average Low 2021–2026

    34.8 °F

  • Average 2021–2026

    43.3 °F

  • Average High 2021–2026

    56.7 °F
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