Columbia River - Carrolls Channel Weather Forecast

    • 58
    • 76

    Chance Rain Showers

    • 57
    • 75

    Mostly Cloudy

    • 55
    • 71

    Mostly Cloudy

    • 56
    • 76

    Partly Sunny

    • 57
    • 78

    Chance Rain

    • 57
    • 73

    Chance Rain

Today 9 Sep Cowlitz County Lowlands

Mostly cloudy this Morning, then becoming partly sunny. A 20 percent chance of Showers. Highs in the mid 70s. Northwest wind 5 to 10 Mph.

Tonight 9 Sep Cowlitz County Lowlands

Partly cloudy with a slight chance of Showers in the Evening, then mostly cloudy after midnight. Lows in the mid 50s. Northwest wind 5 to 10 Mph. Chance of rain 20 percent.

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Columbia River - Carrolls Channel Temperature Statistics

September Temperature

Southwest Washington Regional Airport (1.9 miles)

  • Lowest 2 September, 2025

    55.9 °F

  • Average September

    66.8 °F

  • Highest 2 September, 2025

    88 °F

Climate (2020–Present)

Southwest Washington Regional Airport (1.9 miles)

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  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    62.3 °F
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