Lower Granite Lake Weather Forecast

    • 49
    • 79

    Increasing Clouds

    • 49
    • 77

    Mostly Cloudy

    • 51
    • 79

    Mostly Sunny

    • 51
    • 83

    Partly Sunny

    • 49
    • 81

    Mostly Sunny

    • 52
    • 88

    Mostly Sunny

Today 7 May Washington Palouse

Sunny. Highs in the 70s. Southwest wind 5 to 15 Mph with Gusts up to 25 Mph.

Tonight 7 May Washington Palouse

Partly cloudy. Lows in the mid 40s to lower 50s. South wind 5 to 10 Mph.

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  • Temperature Real-Time

Lower Granite Lake Temperature Statistics

May Temperature

Lewiston, Lewiston-Nez Perce County Airport (22.4 miles)

  • Lowest 1 May, 2026

    44.7 °F

  • Average May

    65.9 °F

  • Highest 2 May, 2026

    83.6 °F

Climate (2021–Present)

Lewiston, Lewiston-Nez Perce County Airport (22.4 miles)

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  • Average Low 2021–2026

    45.8 °F

  • Average 2021–2026

    55.8 °F

  • Average High 2021–2026

    66.1 °F
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