Glenwood Weather Forecast

    • 65
    • 92

    Sunny

    • 66
    • 93

    Mostly Sunny

    • 61
    • 92

    Mostly Sunny

    • 59
    • 76

    Partly Sunny

    • 56
    • 73

    Mostly Cloudy

    • 57
    • 73

    Mostly Cloudy

Today 10 Aug Cowlitz County Lowlands

Sunny. Highs in the lower 90s. North wind 5 to 10 Mph.

Tonight 10 Aug Cowlitz County Lowlands

Clear. Lows in the mid 60s. North wind 5 to 10 Mph.

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Glenwood Temperature Statistics

August Temperature

Southwest Washington Regional Airport (3.7 miles)

  • Lowest 8 August, 2025

    50 °F

  • Average August

    65.2 °F

  • Highest 1 August, 2025

    82 °F

Climate (2020–Present)

Southwest Washington Regional Airport (3.7 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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