Lower Monumental State Airport Weather Forecast

    • 23
    • 36

    Mostly Cloudy

    • 23
    • 35

    Mostly Cloudy

    • 22
    • 35

    Partly Sunny

    • 23
    • 35

    Mostly Cloudy

    • 27
    • 36

    Chance Rain

    • 31
    • 42

    Chance Rain

    • 31
    • 42

    Chance Rain

Today 28 Dec Lower Columbia Basin of Washington

Mostly sunny. Highs in the mid 30s. Light wind.

Tonight 28 Dec Lower Columbia Basin of Washington

Mostly cloudy. Lows in the lower to mid 20s. Light wind.

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Lower Monumental State Airport Temperature Statistics

December Temperature

Walla Walla Regional Airport (33.6 miles)

  • Lowest 1 December, 2025

    27 °F

  • Average December

    46.5 °F

  • Highest 15 December, 2025

    68 °F

Climate (2020–Present)

Walla Walla Regional Airport (33.6 miles)

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  • Average Low 2020–2025

    45.4 °F

  • Average 2020–2025

    54.8 °F

  • Average High 2020–2025

    64.4 °F
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