Lower Granite Lake Weather Forecast

    • 45
    • 60

    Rain

    • 41
    • 60

    Rain

    • 37
    • 52

    Chance Rain

    • 42
    • 50

    Rain

    • 35
    • 50

    Chance Rain

    • 35
    • 47

    Chance Rain

Today 15 Dec Washington Palouse

Rain likely. Highs in the lower 50s to lower 60s. Windy. South wind 15 to 25 Mph with Gusts up to 35 Mph. Chance of precipitation 70 percent. Rainfall Amounts less than a tenth of an inch.

Tonight 15 Dec Washington Palouse

Mostly cloudy. A chance of rain in the evening. Lows in the upper 30s to lower 40s. Windy. Southwest wind 20 to 30 Mph with Gusts up to 45 Mph. Chance of precipitation 50 percent. Rainfall Amounts less than a tenth of an inch.

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Lower Granite Lake Temperature Statistics

December Temperature

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

  • Lowest 1 December, 2025

    28 °F

  • Average December

    45.1 °F

  • Highest 10 December, 2025

    64.9 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    45.7 °F

  • Average 2020–2025

    55.7 °F

  • Average High 2020–2025

    66 °F
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