West Longview Weather Forecast

    • 51
    • 68

    Becoming Sunny

    • 53
    • 77

    Mostly Sunny

    • 54
    • 81

    Mostly Sunny

    • 53
    • 76

    Partly Sunny

    • 53
    • 75

    Partly Sunny

    • 53
    • 76

    Partly Sunny

Today 15 Sep Cowlitz County Lowlands

Mostly cloudy in the Morning, then becoming partly sunny. Patchy fog in the morning. Highs in the upper 60s. Winds light.

Tonight 15 Sep Cowlitz County Lowlands

Mostly clear. Lows in the upper 40s. Winds light.

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West Longview Temperature Statistics

September Temperature

Southwest Washington Regional Airport (6.2 miles)

  • Lowest 4 September, 2026

    48 °F

  • Average September

    61.2 °F

  • Highest 9 September, 2026

    86 °F

Climate (2021–2026)

Southwest Washington Regional Airport (6.2 miles)

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  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    62.4 °F
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