Cowlitz River - Kelso Weather Forecast

    • 56
    • 83

    Mostly Sunny

    • 58
    • 87

    Mostly Sunny

    • 60
    • 86

    Partly Sunny

    • 59
    • 79

    Mostly Cloudy

    • 56
    • 77

    Partly Sunny

    • 55
    • 78

    Partly Sunny

Today 28 Jul Cowlitz County Lowlands

Sunny. Highs in the mid 80s. Winds light.

Tonight 28 Jul Cowlitz County Lowlands

Clear. Lows in the mid 50s. Winds light.

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Cowlitz River - Kelso Temperature Statistics

July Temperature

Southwest Washington Regional Airport (1.9 miles)

  • Lowest 5 July, 2025

    48 °F

  • Average July

    66.6 °F

  • Highest 13 July, 2025

    95 °F

Climate (2020–Present)

Southwest Washington Regional Airport (1.9 miles)

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  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    62.2 °F
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