Pioneer Park Weather Forecast

    • 59
    • 86

    Increasing Clouds

    • 54
    • 85

    Mostly Cloudy

    • 52
    • 74

    Partly Sunny

    • 50
    • 71

    Rain Showers Likely

    • 48
    • 66

    Slight Chance Rain Showers

    • 49
    • 72

    Mostly Sunny

    • 50
    • 73

    Mostly Sunny

Today 9 Sep Foothills of the Blue Mountains of Washington

Sunny. Highs in the lower to mid 80s. Light wind.

Tonight 9 Sep Foothills of the Blue Mountains of Washington

Partly cloudy. Lows in the mid to upper 50s. Light Wind, becoming south 5 to 10 Mph overnight.

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Pioneer Park Temperature Statistics

September Temperature

Walla Walla Regional Airport (2.5 miles)

  • Lowest 4 September, 2026

    49.6 °F

  • Average September

    63.6 °F

  • Highest 1 September, 2026

    81.6 °F

Climate (2021–2026)

Walla Walla Regional Airport (2.5 miles)

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  • Average Low 2021–2026

    45.4 °F

  • Average 2021–2026

    54.8 °F

  • Average High 2021–2026

    64.5 °F
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