Chehalis River - Blue Slough Entrance Weather Forecast

    • 53
    • 68

    Rain

    • 55
    • 65

    Rain Likely

    • 50
    • 66

    Mostly Cloudy

    • 49
    • 71

    Mostly Sunny

    • 53
    • 78

    Mostly Sunny

    • 54
    • 82

    Mostly Sunny

    • 54
    • 78

    Mostly Sunny

Today 12 Sep Lower Chehalis River Valley

Mostly cloudy. A slight chance of rain late in the afternoon. Highs in the mid 60s to lower 70s. Light wind.

Tonight 12 Sep Lower Chehalis River Valley

A slight chance of Thunderstorms in the evening. Rain. Patchy fog late in the evening. Rainfall Amounts a quarter to a half inch Possible, except higher Amounts possible in Thunderstorms. Lows in the lower to mid 50s. West wind to 10 Mph in the evening becoming light.

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Chehalis River - Blue Slough Entrance Temperature Statistics

September Temperature

Hoquiam, Bowerman Airport (9.3 miles)

  • Lowest 8 September, 2026

    48.7 °F

  • Average September

    60.9 °F

  • Highest 9 September, 2026

    72 °F

Climate (2021–2026)

Hoquiam, Bowerman Airport (9.3 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    58.6 °F
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