San Juan Island - Point Joe Weather Forecast

    • 53
    • 69

    Increasing Clouds

    • 52
    • 69

    Partly Sunny

    • 52
    • 66

    Partly Sunny

    • 53
    • 68

    Mostly Sunny

    • 53
    • 70

    Mostly Sunny

    • 54
    • 69

    Partly Sunny

    • 55
    • 70

    Partly Sunny

Today 7 Aug San Juan County

Sunny. Highs in the upper 60s to mid 70s. Light wind.

Tonight 7 Aug San Juan County

Partly cloudy until early morning then becoming mostly cloudy. Lows in the 50s. Light wind.

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San Juan Island - Point Joe Temperature Statistics

August Temperature

Friday Harbor Airport (3.7 miles)

  • Lowest 3 August, 2026

    48.9 °F

  • Average August

    62.6 °F

  • Highest 4 August, 2026

    78.1 °F

Climate (2021–2026)

Friday Harbor Airport (3.7 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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