Castle Island Weather Forecast
- 45
- 58
Increasing Clouds
- 48
- 61
Rain Likely
- 47
- 55
Rain Likely
- 46
- 55
Rain Likely
- 45
- 54
Rain Likely
- 45
- 55
Chance Rain
- 45
- 56
Partly Sunny
Today 2 May San Juan County
Sunny. Highs in the upper 50s to mid 60s. North wind around 10 Mph becoming northwest in the afternoon.
Tonight 2 May San Juan County
Clear. Lows in the 40s. Light wind becoming southeast to 10 Mph after midnight.
Castle Island Temperature Statistics
May Temperature
Whidbey Island Naval Air Station - Ault Field (8.1 miles)
Lowest
–Average May
–Highest
–
Climate (2019–Present)
Whidbey Island Naval Air Station - Ault Field (8.1 miles)
Take a look at our website widgetsAvailable free! Find Out MoreAverage Low 2019–2024
45.2 °FAverage 2019–2024
50.9 °FAverage High 2019–2024
56.9 °F