Roche Harbor SPB Weather Forecast

    • 48
    • 65

    Becoming Sunny

    • 51
    • 66

    Mostly Sunny

    • 55
    • 70

    Mostly Sunny

    • 56
    • 74

    Partly Sunny

    • 52
    • 70

    Slight Chance Rain

    • 50
    • 66

    Partly Sunny

Today 30 May San Juan County

Mostly cloudy in the morning then becoming mostly sunny. Highs in the 60s. West wind 10 to 15 Mph with Gusts to 25 Mph becoming southwest in the afternoon.

Tonight 30 May San Juan County

Mostly clear. Lows in the mid 40s to lower 50s. Southwest wind 10 to 15 Mph becoming west after midnight. Gusts to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Roche Harbor SPB Temperature Statistics

May Temperature

Friday Harbor Airport (8.1 miles)

  • Lowest 17 May, 2026

    41 °F

  • Average May

    55.2 °F

  • Highest 3 May, 2026

    75.9 °F

Climate (2021–Present)

Friday Harbor Airport (8.1 miles)

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    59.7 °F
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