Lower Monumental State Airport Weather Forecast

    • 39
    • 63

    Increasing Clouds

    • 43
    • 67

    Partly Sunny

    • 42
    • 66

    Partly Sunny

    • 44
    • 70

    Mostly Sunny

    • 47
    • 74

    Partly Sunny

    • 48
    • 76

    Partly Sunny

Today 26 Apr Lower Columbia Basin of Washington

Sunny. Highs in the 60s. Light Wind, becoming northwest 5 to 10 Mph in the afternoon.

Tonight 26 Apr Lower Columbia Basin of Washington

Mostly cloudy. Lows in the upper 30s to lower 40s. Northwest wind 5 to 10 Mph.

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Lower Monumental State Airport Temperature Statistics

April Temperature

Walla Walla Regional Airport (33.6 miles)

  • Lowest 16 April, 2026

    36.6 °F

  • Average April

    53.2 °F

  • Highest 6 April, 2026

    74.6 °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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