Lake Sylvia State Park Weather Forecast

    • 57
    • 73

    Increasing Clouds

    • 56
    • 71

    Mostly Cloudy

    • 54
    • 67

    Chance Rain Showers

    • 53
    • 68

    Mostly Cloudy

    • 51
    • 66

    Mostly Cloudy

    • 52
    • 69

    Chance Rain

Today 25 Aug Middle Chehalis River Valley

Sunny. Highs in the 70s. Light wind becoming west 10 to 15 Mph with Gusts to 25 Mph in the afternoon.

Tonight 25 Aug Middle Chehalis River Valley

Partly cloudy in the evening then becoming cloudy. Lows in the 50s. West wind 10 to 15 Mph with Gusts to 25 Mph becoming southwest after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Sylvia State Park Temperature Statistics

August Temperature

Hoquiam, Bowerman Airport (15.5 miles)

  • Lowest 3 August, 2026

    49.6 °F

  • Average August

    62.2 °F

  • Highest 4 August, 2026

    79.6 °F

Climate (2021–2026)

Hoquiam, Bowerman Airport (15.5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    52.3 °F

  • Average High 2021–2026

    58.6 °F
Get WillyWeather+ to remove ads