Lower Monumental State Airport Weather Forecast

    • 41
    • 66

    Partly Sunny

    • 44
    • 71

    Partly Sunny

    • 46
    • 73

    Partly Sunny

    • 48
    • 75

    Mostly Sunny

    • 49
    • 79

    Mostly Sunny

    • 50
    • 79

    Mostly Sunny

Today 17 May Lower Columbia Basin of Washington

Partly cloudy in the Morning, becoming sunny. Highs in the upper 60s to lower 70s. Northwest wind 5 to 10 Mph. Gusts up to 20 Mph in the morning.

Tonight 17 May Lower Columbia Basin of Washington

Mostly clear. Lows in the lower to mid 40s. Northwest wind 5 to 10 Mph. Gusts up to 20 Mph overnight.

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Lower Monumental State Airport Temperature Statistics

May Temperature

Walla Walla Regional Airport (33.6 miles)

  • Lowest 11 May, 2026

    45.6 °F

  • Average May

    64.4 °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

    64.5 °F
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