Pioneer Park Weather Forecast

    • 49
    • 73

    Increasing Clouds

    • 51
    • 76

    Partly Sunny

    • 54
    • 78

    Mostly Sunny

    • 53
    • 81

    Mostly Sunny

    • 56
    • 81

    Partly Sunny

    • 56
    • 84

    Partly Sunny

    • 53
    • 80

    Mostly Sunny

Today 30 Sep Foothills of the Blue Mountains of Washington

Partly cloudy. Highs in the lower to mid 70s. West wind 5 to 10 Mph.

Tonight 30 Sep Foothills of the Blue Mountains of Washington

Partly cloudy. Lows in the mid to upper 40s. Light wind.

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Pioneer Park Temperature Statistics

September Temperature

Walla Walla Regional Airport (2.5 miles)

  • Lowest 27 September, 2026

    44.1 °F

  • Average September

    64 °F

  • Highest 20 September, 2026

    87.7 °F

Climate (2021–2026)

Walla Walla Regional Airport (2.5 miles)

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    54.9 °F

  • Average High 2021–2026

    64.5 °F
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