Lake Sylvia State Park Weather Forecast
- 46
- 72
Mostly Sunny
- 44
- 71
Mostly Sunny
- 42
- 60
Chance Rain
- 46
- 62
Chance Rain
- 47
- 61
Rain Likely
- 44
- 59
Rain
- 43
- 58
Chance Rain
Today 6 Oct Middle Chehalis River Valley
Sunny. Highs in the lower to mid 70s. Light wind.
Tonight 6 Oct Middle Chehalis River Valley
Mostly clear. Lows in the 40s. Light wind.
Lake Sylvia State Park Temperature Statistics
October Temperature
Hoquiam, Bowerman Airport (15.5 miles)
Lowest 4 October, 2025
51.1 °FAverage October
58.5 °FHighest 1 October, 2025
63 °F
Climate (2020–Present)
Hoquiam, Bowerman Airport (15.5 miles)
Average Low 2020–2025
46.2 °FAverage 2020–2025
52.1 °FAverage High 2020–2025
58.3 °F