Lake Sylvia State Park Weather Forecast

    • 38
    • 58

    Becoming Sunny

    • 34
    • 63

    Sunny

    • 40
    • 64

    Mostly Sunny

    • 49
    • 61

    Chance Rain

    • 48
    • 63

    Chance Rain

    • 49
    • 68

    Partly Sunny

Today 10 Oct Middle Chehalis River Valley

Sunny. Highs near 60. Light wind.

Tonight 10 Oct Middle Chehalis River Valley

Mostly clear. Lows in the mid 30s to lower 40s. Light wind.

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Lake Sylvia State Park Temperature Statistics

October Temperature

Hoquiam, Bowerman Airport (15.5 miles)

  • Lowest 7 October, 2026

    48 °F

  • Average October

    58.5 °F

  • Highest 3 October, 2026

    73.7 °F

Climate (2021–2026)

Hoquiam, Bowerman Airport (15.5 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    58.7 °F
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