Columbia River - Wallace Slough Entrance Weather Forecast

    • 35
    • 46

    Mostly Cloudy

    • 35
    • 45

    Mostly Cloudy

    • 35
    • 49

    Mostly Cloudy

    • 36
    • 49

    Mostly Cloudy

    • 38
    • 50

    Chance Rain

    • 42
    • 50

    Rain

    • 39
    • 49

    Rain

Today 27 Dec Lower Columbia River

Areas of frost in the morning. Partly sunny. Highs in the mid 40s. Winds light.

Tonight 27 Dec Lower Columbia River

Mostly cloudy. Areas of frost with patchy fog after midnight. Lows in the mid 30s. Light and variable Winds.

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  • Temperature Real-Time

Columbia River - Wallace Slough Entrance Temperature Statistics

December Temperature

Southwest Washington Regional Airport (18.6 miles)

  • Lowest 1 December, 2025

    35.1 °F

  • Average December

    47.8 °F

  • Highest 15 December, 2025

    60.1 °F

Climate (2020–Present)

Southwest Washington Regional Airport (18.6 miles)

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  • Average Low 2020–2025

    45.2 °F

  • Average 2020–2025

    53 °F

  • Average High 2020–2025

    62.4 °F
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