Cowlitz River - Kelso Weather Forecast

    • 57
    • 83

    Becoming Sunny

    • 57
    • 85

    Mostly Sunny

    • 56
    • 81

    Partly Sunny

    • 54
    • 78

    Partly Sunny

    • 54
    • 78

    Partly Sunny

    • 54
    • 79

    Mostly Sunny

Today 22 Jul Cowlitz County Lowlands

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

Tonight 22 Jul Cowlitz County Lowlands

Mostly clear. Patchy fog after midnight. Lows in the mid 50s. Northwest wind 5 to 10 Mph.

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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

    67.4 °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

    62.3 °F
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