Lower Monumental State Airport Weather Forecast

    • 47
    • 74

    Mostly Sunny

    • 48
    • 76

    Partly Sunny

    • 50
    • 78

    Partly Sunny

    • 52
    • 83

    Partly Sunny

    • 50
    • 79

    Mostly Sunny

    • 49
    • 78

    Partly Sunny

Today 31 May Lower Columbia Basin of Washington

Partly cloudy in the morning then clearing. Highs in the 70s. Southwest wind 5 to 10 Mph with Gusts to around 20 Mph.

Tonight 31 May Lower Columbia Basin of Washington

Mostly clear. Lows in the mid 40s to lower 50s. Southwest wind 5 to 10 Mph.

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Lower Monumental State Airport Temperature Statistics

May Temperature

Walla Walla Regional Airport (33.6 miles)

  • Lowest 17 May, 2026

    42.7 °F

  • Average May

    63.8 °F

  • Highest 2 May, 2026

    85.6 °F

Climate (2021–Present)

Walla Walla Regional Airport (33.6 miles)

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  • Average Low 2021–2026

    45.5 °F

  • Average 2021–2026

    55 °F

  • Average High 2021–2026

    64.6 °F
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