Lake Sylvia State Park Weather Forecast

    • 44
    • 58

    Rain Showers

    • 46
    • 61

    Rain Likely

    • 48
    • 59

    Rain

    • 46
    • 60

    Rain Showers Likely

    • 46
    • 63

    Chance Rain

    • 47
    • 70

    Mostly Sunny

Today 6 Jun Middle Chehalis River Valley

Showers likely in the Morning, then Showers and a chance of Thunderstorms. Rainfall Amounts a tenth to a quarter of an inch Possible, except higher Amounts possible in Thunderstorms. Highs near 60. Light wind becoming west around 10 Mph in the afternoon.

Tonight 6 Jun Middle Chehalis River Valley

Mostly cloudy. A slight chance of Showers in the evening. Lows in the lower to mid 40s. West wind to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Sylvia State Park Temperature Statistics

June Temperature

Hoquiam, Bowerman Airport (15.5 miles)

  • Lowest 1 June, 2026

    42.7 °F

  • Average June

    60.2 °F

  • Highest 2 June, 2026

    82.7 °F

Climate (2021–Present)

Hoquiam, Bowerman Airport (15.5 miles)

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  • Average Low 2021–2026

    46.4 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    58.7 °F
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