Columbia River - Kalama River Entrance Weather Forecast

    • 37
    • 59

    Rain

    • 33
    • 53

    Becoming Sunny

    • 37
    • 56

    Mostly Cloudy

    • 43
    • 57

    Rain Likely

    • 41
    • 55

    Rain

    • 34
    • 52

    Rain

    • 34
    • 56

    Mostly Sunny

Today 20 Mar Cowlitz County Lowlands

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

Tonight 20 Mar Cowlitz County Lowlands

Mostly cloudy. A chance of rain in the evening. Lows in the upper 30s. Northwest wind 10 to 15 Mph. Chance of rain 50 percent. Rainfall Amounts less than a tenth of an inch.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Columbia River - Kalama River Entrance Temperature Statistics

March Temperature

Southwest Washington Regional Airport (5.6 miles)

  • Lowest 10 March, 2026

    32 °F

  • Average March

    46.9 °F

  • Highest 16 March, 2026

    66 °F

Climate (2021–Present)

Southwest Washington Regional Airport (5.6 miles)

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  • Average Low 2021–2026

    45.1 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    62.5 °F
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