Lake Sylvia State Park Weather Forecast

    • 49
    • 69

    Mostly Cloudy

    • 46
    • 72

    Partly Sunny

    • 50
    • 79

    Mostly Sunny

    • 52
    • 82

    Mostly Sunny

    • 54
    • 81

    Partly Sunny

    • 53
    • 78

    Slight Chance Rain

Today 11 Jul Middle Chehalis River Valley

Partly sunny. A slight chance of Showers early in the afternoon. Highs in the upper 60s to mid 70s. Southwest wind to 10 Mph becoming west in the afternoon.

Tonight 11 Jul Middle Chehalis River Valley

Partly cloudy. Lows in the mid to upper 40s. West wind to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Sylvia State Park Temperature Statistics

July Temperature

Hoquiam, Bowerman Airport (15.5 miles)

  • Lowest 6 July, 2026

    47.6 °F

  • Average July

    58.7 °F

  • Highest 5 July, 2026

    69.7 °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