Columbia River - Kalama River Entrance Weather Forecast

    • 47
    • 59

    Rain

    • 44
    • 59

    Rain

    • 41
    • 65

    Partly Sunny

    • 43
    • 73

    Sunny

    • 44
    • 72

    Mostly Sunny

    • 45
    • 71

    Partly Sunny

Today 21 Apr Cowlitz County Lowlands

Rain. Highs in the upper 50s. Winds light. Chance of rain 90 percent. Rainfall Amounts a tenth to a quarter of an inch.

Tonight 21 Apr Cowlitz County Lowlands

Rain likely. Lows around 50. Winds light. Chance of rain 70 percent. Rainfall Amounts less than a tenth of an inch.

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Columbia River - Kalama River Entrance Temperature Statistics

April Temperature

Southwest Washington Regional Airport (5.6 miles)

  • Lowest 9 April, 2026

    35.1 °F

  • Average April

    52.4 °F

  • Highest 5 April, 2026

    79 °F

Climate (2021–Present)

Southwest Washington Regional Airport (5.6 miles)

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  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    62.5 °F
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