Cactus Islands Weather Forecast

    • 55
    • 68

    Mostly Sunny

    • 54
    • 67

    Partly Sunny

    • 55
    • 66

    Partly Sunny

    • 56
    • 66

    Chance Rain

    • 56
    • 66

    Chance Rain

    • 55
    • 66

    Chance Rain

Today 2 Aug San Juan County

Sunny. Highs in the mid 60s to lower 70s. Light wind becoming south around 10 Mph in the afternoon.

Tonight 2 Aug San Juan County

Mostly clear. Lows in the lower to mid 50s. Southwest wind to 10 Mph. Gusts to 20 Mph in the evening.

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Cactus Islands Temperature Statistics

August Temperature

Friday Harbor Airport (9.9 miles)

  • Lowest

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  • Average August

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Climate (2020–Present)

Friday Harbor Airport (9.9 miles)

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  • Average Low 2020–2025

    44.3 °F

  • Average 2020–2025

    51.7 °F

  • Average High 2020–2025

    59.5 °F
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