New West Side Weather Forecast

    • 42
    • 70

    Mostly Sunny

    • 43
    • 73

    Mostly Sunny

    • 40
    • 63

    Partly Sunny

    • 39
    • 62

    Partly Sunny

    • 41
    • 60

    Rain Likely

    • 40
    • 62

    Chance Rain

    • 40
    • 64

    Partly Sunny

Today 20 Oct Cowlitz County Lowlands

Partly sunny. Highs in the mid 60s.

Tonight 20 Oct Cowlitz County Lowlands

Mostly clear. Lows in the lower 40s. Winds light this Evening, becoming light and variable.

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New West Side Temperature Statistics

October Temperature

Southwest Washington Regional Airport (2.5 miles)

  • Lowest 11 October, 2026

    36 °F

  • Average October

    56.7 °F

  • Highest 4 October, 2026

    79 °F

Climate (2021–2026)

Southwest Washington Regional Airport (2.5 miles)

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  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    53.2 °F

  • Average High 2021–2026

    62.5 °F
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