Orcas Island - Deer Harbor Weather Forecast

    • 55
    • 72

    Mostly Sunny

    • 55
    • 70

    Mostly Sunny

    • 54
    • 71

    Mostly Sunny

    • 55
    • 68

    Rain Likely

    • 54
    • 68

    Rain Likely

    • 54
    • 68

    Chance Rain

Today 17 Sep San Juan County

Sunny. Highs in the upper 60s to mid 70s. South wind to 10 Mph becoming southwest around 10 Mph in the afternoon.

Tonight 17 Sep San Juan County

Partly cloudy. Lows in the 50s. Northwest wind to 10 Mph becoming west after midnight.

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Orcas Island - Deer Harbor Temperature Statistics

September Temperature

Friday Harbor Airport (6.8 miles)

  • Lowest 10 September, 2025

    48 °F

  • Average September

    58 °F

  • Highest 3 September, 2025

    75.9 °F

Climate (2020–Present)

Friday Harbor Airport (6.8 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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