James Island State Park Weather Forecast

    • 54
    • 70

    Mostly Sunny

    • 55
    • 70

    Chance Rain

    • 54
    • 68

    Rain Likely

    • 54
    • 67

    Partly Sunny

    • 54
    • 68

    Mostly Sunny

    • 55
    • 69

    Mostly Sunny

    • 56
    • 72

    Partly Sunny

Today 14 Jul San Juan County

Sunny. Highs in the 70s. Light wind.

Tonight 14 Jul San Juan County

Mostly clear. Lows in the 50s. Light wind.

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James Island State Park Temperature Statistics

July Temperature

Friday Harbor Airport (11.2 miles)

  • Lowest 5 July, 2026

    46.9 °F

  • Average July

    58.7 °F

  • Highest 6 July, 2026

    75 °F

Climate (2021–2026)

Friday Harbor Airport (11.2 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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