Decatur Island - Davis Bay Weather Forecast
- 51
- 64
Decreasing Clouds
- 53
- 66
Partly Sunny
- 54
- 67
Partly Sunny
- 54
- 68
Mostly Sunny
- 53
- 67
Partly Sunny
- 52
- 64
Partly Sunny
Today 20 Jul San Juan County
Mostly sunny. Highs in the mid 60s to lower 70s. Light wind.
Tonight 20 Jul San Juan County
Mostly clear. Lows in the 50s. Light wind.
Decatur Island - Davis Bay Temperature Statistics
July Temperature
Friday Harbor Airport (9.9 miles)
Lowest 4 July, 2025
46.7 °FAverage July
62.5 °FHighest 15 July, 2025
88.6 °F
Climate (2020–Present)
Friday Harbor Airport (9.9 miles)
Average Low 2020–2025
44.3 °FAverage 2020–2025
51.7 °FAverage High 2020–2025
59.5 °F