Cowlitz River - Longview Weather Forecast

    • 42
    • 56

    Rain Likely

    • 38
    • 52

    Rain

    • 35
    • 50

    Rain Showers

    • 38
    • 55

    Chance Rain Showers

    • 39
    • 59

    Mostly Cloudy

    • 45
    • 63

    Chance Rain

    • 43
    • 57

    Rain Likely

Today 13 Apr Cowlitz County Lowlands

Partly sunny with a 50 percent chance of Showers. Highs in the mid 50s. West wind 5 to 10 Mph. Rainfall Amounts less than a tenth of an inch.

Tonight 13 Apr Cowlitz County Lowlands

Mostly cloudy. A slight chance of Showers this Evening, then a chance of Showers after midnight. Lows in the lower 40s. Southwest wind 5 to 10 Mph, becoming light after midnight. Chance of rain 40 percent. Rainfall Amounts less than a tenth of an inch.

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  • Temperature Real-Time

Cowlitz River - Longview Temperature Statistics

April Temperature

Southwest Washington Regional Airport (2.5 miles)

  • Lowest 9 April, 2026

    35.1 °F

  • Average April

    53.8 °F

  • Highest 5 April, 2026

    79 °F

Climate (2021–Present)

Southwest Washington Regional Airport (2.5 miles)

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  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    62.6 °F
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