Spencer Spit State Park Weather Forecast
- 53
- 69
Becoming Sunny
- 53
- 68
Mostly Sunny
- 53
- 68
Partly Sunny
- 53
- 69
Chance Rain
- 54
- 69
Chance Rain
- 52
- 69
Partly Sunny
Today 10 Sep San Juan County
Mostly sunny. Highs in the upper 60s to mid 70s. Light wind.
Tonight 10 Sep San Juan County
Mostly clear. Lows in the 50s. Light wind.
Spencer Spit State Park Temperature Statistics
September Temperature
Friday Harbor Airport (7.5 miles)
Lowest 5 September, 2025
50 °FAverage September
58.5 °FHighest 3 September, 2025
75.9 °F
Climate (2020–Present)
Friday Harbor Airport (7.5 miles)
Average Low 2020–2025
44.3 °FAverage 2020–2025
51.7 °FAverage High 2020–2025
59.5 °F