Lake Waha Weather Forecast

    • 41
    • 56

    Mostly Cloudy

    • 42
    • 60

    Partly Sunny

    • 45
    • 63

    Mostly Sunny

    • 50
    • 66

    Partly Sunny

    • 47
    • 62

    Partly Sunny

    • 46
    • 62

    Partly Sunny

Today 26 Sep Lewis and Southern Nez Perce Counties

Partly cloudy in the morning then clearing. Highs in the mid 50s to mid 60s.

Tonight 26 Sep Lewis and Southern Nez Perce Counties

Mostly cloudy. Lows in the mid 30s to lower 40s.

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Lake Waha Temperature Statistics

September Temperature

Grangeville - Idaho County Airport (37.9 miles)

  • Lowest 15 September, 2026

    37.4 °F

  • Average September

    56.7 °F

  • Highest 10 September, 2026

    84.2 °F

Climate (2021–2026)

Grangeville - Idaho County Airport (37.9 miles)

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  • Average Low 2021–2026

    37 °F

  • Average 2021–2026

    47.4 °F

  • Average High 2021–2026

    57.9 °F
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