Columbia River - Kalama River Entrance Weather Forecast

    • 45
    • 65

    Increasing Clouds

    • 43
    • 64

    Mostly Cloudy

    • 43
    • 67

    Mostly Sunny

    • 44
    • 70

    Partly Sunny

    • 43
    • 63

    Slight Chance Rain

    • 41
    • 62

    Mostly Cloudy

Today 18 Oct Cowlitz County Lowlands

Sunny. Highs in the mid 60s. North wind 5 to 10 Mph.

Tonight 18 Oct Cowlitz County Lowlands

Mostly cloudy. Lows in the mid 40s. Winds light in the Evening, becoming light and variable.

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Columbia River - Kalama River Entrance Temperature Statistics

October Temperature

Southwest Washington Regional Airport (5.6 miles)

  • Lowest 11 October, 2026

    36 °F

  • Average October

    57.2 °F

  • Highest 4 October, 2026

    79 °F

Climate (2021–2026)

Southwest Washington Regional Airport (5.6 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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