Nez Perce National Forest Weather Forecast

    • 42
    • 59

    Becoming Sunny

    • 44
    • 58

    Mostly Sunny

    • 46
    • 66

    Partly Sunny

    • 34
    • 53

    Chance Rain

    • 34
    • 46

    Partly Sunny

    • 33
    • 48

    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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Nez Perce National Forest Temperature Statistics

September Temperature

Grangeville - Idaho County Airport (29.8 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 (29.8 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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