Columbia River - Kalama River Entrance Weather Forecast

    • 34
    • 48

    Increasing Clouds

    • 40
    • 45

    Rain

    • 43
    • 53

    Rain

    • 42
    • 51

    Rain

    • 40
    • 50

    Rain Likely

    • 39
    • 50

    Chance Rain Showers

Today 31 Dec Cowlitz County Lowlands

Widespread frost this morning. Mostly sunny. Highs in the upper 40s. Winds light.

Tonight 31 Dec Cowlitz County Lowlands

Partly cloudy in the Evening, then becoming mostly cloudy. Areas of frost. Lows in the mid 30s. Winds light.

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Columbia River - Kalama River Entrance Temperature Statistics

December Temperature

Southwest Washington Regional Airport (5.6 miles)

  • Lowest 28 December, 2025

    30 °F

  • Average December

    46.4 °F

  • Highest 15 December, 2025

    60.1 °F

Climate (2020–Present)

Southwest Washington Regional Airport (5.6 miles)

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  • Average Low 2020–2025

    45.2 °F

  • Average 2020–2025

    53 °F

  • Average High 2020–2025

    62.4 °F
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