Wallace Slough - Wallace Island Weather Forecast

    • 50
    • 65

    Mostly Sunny

    • 54
    • 73

    Mostly Sunny

    • 55
    • 73

    Partly Sunny

    • 44
    • 62

    Chance Rain

    • 46
    • 62

    Mostly Cloudy

    • 46
    • 57

    Chance Rain

    • 45
    • 60

    Partly Sunny

Today 14 Oct Lower Columbia River

Sunny. Highs around 70. Winds light.

Tonight 14 Oct Lower Columbia River

Mostly clear. Patchy fog after midnight. Lows in the lower 50s. Winds light.

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Wallace Slough - Wallace Island Temperature Statistics

October Temperature

Southwest Washington Regional Airport (17.4 miles)

  • Lowest 11 October, 2026

    36 °F

  • Average October

    57.5 °F

  • Highest 4 October, 2026

    79 °F

Climate (2021–2026)

Southwest Washington Regional Airport (17.4 miles)

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  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    62.5 °F
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