West Longview Weather Forecast

    • 45
    • 68

    Increasing Clouds

    • 48
    • 68

    Mostly Cloudy

    • 50
    • 72

    Partly Sunny

    • 52
    • 77

    Partly Sunny

    • 50
    • 73

    Partly Sunny

    • 48
    • 71

    Partly Sunny

Today 18 May Cowlitz County Lowlands

Mostly sunny. Highs around 70. Northwest wind 5 to 10 Mph.

Tonight 18 May Cowlitz County Lowlands

Mostly clear in the Evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the mid 40s. Northwest wind 5 to 10 Mph.

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West Longview Temperature Statistics

May Temperature

Southwest Washington Regional Airport (6.2 miles)

  • Lowest 9 May, 2026

    44.1 °F

  • Average May

    59.5 °F

  • Highest 3 May, 2026

    91 °F

Climate (2021–Present)

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

    62.5 °F
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