Twin Lakes Weather Forecast

    • 43
    • 60

    Becoming Sunny

    • 47
    • 60

    Mostly Sunny

    • 48
    • 67

    Partly Sunny

    • 35
    • 54

    Chance Rain

    • 36
    • 47

    Partly Sunny

    • 35
    • 50

    Partly Sunny

Today 22 Sep Southern Clearwater Mountains

Partly cloudy. Highs 64 to 79.

Tonight 22 Sep Southern Clearwater Mountains

Partly cloudy. Lows in the upper 30s to lower 50s.

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Twin Lakes Temperature Statistics

September Temperature

Grangeville - Idaho County Airport (26.1 miles)

  • Lowest 15 September, 2026

    37.4 °F

  • Average September

    56 °F

  • Highest 10 September, 2026

    84.2 °F

Climate (2021–2026)

Grangeville - Idaho County Airport (26.1 miles)

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  • Average Low 2021–2026

    37 °F

  • Average 2021–2026

    47.3 °F

  • Average High 2021–2026

    57.9 °F
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