Lake Sylvia State Park Weather Forecast

    • 37
    • 48

    Rain

    • 35
    • 49

    Rain Likely

    • 38
    • 50

    Rain Likely

    • 37
    • 51

    Rain

    • 30
    • 49

    Rain Likely

    • 31
    • 49

    Slight Chance Rain/Snow

Today 23 Feb Middle Chehalis River Valley

Rain in the Morning, then rain likely in the late morning and early afternoon. A chance of rain late in the afternoon. Rainfall Amounts a quarter to a half inch possible. Highs in the mid 40s to lower 50s. South wind to 10 Mph in the morning becoming light.

Tonight 23 Feb Middle Chehalis River Valley

Cloudy with rain likely in the Evening, then mostly cloudy with a chance of rain after midnight. Rainfall Amounts less than a tenth of an inch likely. Lows in the 30s. Light wind.

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Lake Sylvia State Park Temperature Statistics

February Temperature

Hoquiam, Bowerman Airport (15.5 miles)

  • Lowest 18 February, 2026

    30 °F

  • Average February

    44.9 °F

  • Highest 4 February, 2026

    61.6 °F

Climate (2021–Present)

Hoquiam, Bowerman Airport (15.5 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    52.2 °F

  • Average High 2021–2026

    58.5 °F
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