Lower Monumental State Airport Weather Forecast

    • 38
    • 53

    Mostly Cloudy

    • 37
    • 56

    Rain

    • 36
    • 54

    Chance Rain

    • 37
    • 59

    Mostly Sunny

    • 42
    • 66

    Partly Sunny

    • 45
    • 69

    Mostly Cloudy

    • 47
    • 72

    Mostly Cloudy

Today 31 Mar Lower Columbia Basin of Washington

Mostly cloudy. Highs in the lower to mid 50s. West wind 5 to 10 Mph.

Tonight 31 Mar Lower Columbia Basin of Washington

Mostly cloudy. A 20 percent chance of rain overnight. Lows in the upper 30s to lower 40s. South wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lower Monumental State Airport Temperature Statistics

March Temperature

Walla Walla Regional Airport (33.6 miles)

  • Lowest 15 March, 2026

    31.6 °F

  • Average March

    50.4 °F

  • Highest 19 March, 2026

    76.6 °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

    54.9 °F

  • Average High 2021–2026

    64.5 °F
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