Columbia River - Kalama River Entrance Weather Forecast

    • 57
    • 76

    Slight Chance Rain

    • 57
    • 78

    Mostly Cloudy

    • 56
    • 77

    Mostly Cloudy

    • 57
    • 80

    Partly Sunny

    • 55
    • 81

    Mostly Sunny

    • 56
    • 85

    Sunny

Today 16 Aug Cowlitz County Lowlands

Partly sunny. A slight chance of rain this Morning, then a slight chance of Showers this afternoon. Highs in the mid 70s. Winds light. Chance of rain 20 percent.

Tonight 16 Aug Cowlitz County Lowlands

Mostly cloudy in the Evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the mid 50s. Winds light in the Evening, becoming light and variable.

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  • Temperature Real-Time

Columbia River - Kalama River Entrance Temperature Statistics

August Temperature

Southwest Washington Regional Airport (5.6 miles)

  • Lowest 8 August, 2025

    50 °F

  • Average August

    68.8 °F

  • Highest 12 August, 2025

    99 °F

Climate (2020–Present)

Southwest Washington Regional Airport (5.6 miles)

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  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    62.3 °F
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