Chehalis River - Cosmopolis Weather Forecast

    • 54
    • 67

    Increasing Clouds

    • 55
    • 68

    Gradual Clearing

    • 55
    • 70

    Mostly Cloudy

    • 55
    • 67

    Mostly Cloudy

    • 52
    • 67

    Mostly Cloudy

    • 52
    • 69

    Partly Sunny

    • 51
    • 69

    Partly Sunny

Today 21 Jul Lower Chehalis River Valley

Partly sunny. Highs in the mid 60s to lower 70s. Light wind becoming west around 10 Mph in the afternoon.

Tonight 21 Jul Lower Chehalis River Valley

Mostly cloudy. Lows in the lower to mid 50s. Light wind.

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Chehalis River - Cosmopolis Temperature Statistics

July Temperature

Hoquiam, Bowerman Airport (6.8 miles)

  • Lowest 4 July, 2025

    48.7 °F

  • Average July

    60.8 °F

  • Highest 15 July, 2025

    78.7 °F

Climate (2020–Present)

Hoquiam, Bowerman Airport (6.8 miles)

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  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    58.4 °F
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