San Juan Island - Roche Harbor Weather Forecast
- 49
- 61
Mostly Sunny
- 47
- 63
Chance Rain
- 45
- 57
Partly Sunny
- 46
- 58
Mostly Sunny
- 49
- 61
Partly Sunny
- 50
- 62
Partly Sunny
- 47
- 61
Partly Sunny
Today 1 May San Juan County
Sunny. Highs in the 60s. Light wind becoming north to 10 Mph in the afternoon.
Tonight 1 May San Juan County
Mostly clear. Lows in the mid to upper 40s. Light wind.
San Juan Island - Roche Harbor Temperature Statistics
May Temperature
Friday Harbor Airport (8.1 miles)
Lowest
–Average May
–Highest
–
Climate (2020–Present)
Friday Harbor Airport (8.1 miles)
Average Low 2020–2025
44.3 °FAverage 2020–2025
51.6 °FAverage High 2020–2025
59.3 °F