Palouse Falls State Park Weather Forecast

    • 56
    • 86

    Mostly Sunny

    • 59
    • 88

    Mostly Sunny

    • 53
    • 76

    Chance Rain Showers

    • 50
    • 77

    Mostly Sunny

    • 52
    • 86

    Sunny

    • 52
    • 86

    Mostly Sunny

    • 49
    • 77

    Partly Sunny

Today 12 Sep Lower Columbia Basin of Washington

Sunny. Haze in the afternoon. Highs in the lower to mid 80s. South wind 5 to 10 Mph.

Tonight 12 Sep Lower Columbia Basin of Washington

Mostly clear. Lows in the mid to upper 50s. South wind 5 to 10 Mph in the Evening, becoming light.

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Palouse Falls State Park Temperature Statistics

September Temperature

Walla Walla Regional Airport (39.1 miles)

  • Lowest 10 September, 2025

    62.1 °F

  • Average September

    79.9 °F

  • Highest 2 September, 2025

    97 °F

Climate (2020–Present)

Walla Walla Regional Airport (39.1 miles)

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  • Average Low 2020–2025

    45.1 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    64.1 °F
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