Lake Sylvia State Park Weather Forecast

    • 41
    • 69

    Mostly Sunny

    • 46
    • 67

    Rain Likely

    • 43
    • 58

    Rain Likely

    • 43
    • 58

    Chance Rain

    • 42
    • 54

    Chance Rain

    • 41
    • 52

    Rain

    • 37
    • 53

    Rain Likely

Today 9 Apr Middle Chehalis River Valley

Sunny. Areas of frost in the morning. Highs near 70. Light wind.

Tonight 9 Apr Middle Chehalis River Valley

Mostly clear. Lows near 40. Light wind.

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  • Temperature Real-Time

Lake Sylvia State Park Temperature Statistics

April Temperature

Hoquiam, Bowerman Airport (15.5 miles)

  • Lowest 4 April, 2026

    36.6 °F

  • Average April

    50.5 °F

  • Highest 5 April, 2026

    72.6 °F

Climate (2021–Present)

Hoquiam, Bowerman Airport (15.5 miles)

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  • Average Low 2021–2026

    46.4 °F

  • Average 2021–2026

    52.3 °F

  • Average High 2021–2026

    58.6 °F
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