Armitage Island Weather Forecast

    • 56
    • 72

    Increasing Clouds

    • 55
    • 69

    Rain Likely

    • 54
    • 67

    Partly Sunny

    • 55
    • 68

    Mostly Sunny

    • 56
    • 71

    Mostly Sunny

    • 58
    • 75

    Partly Sunny

    • 57
    • 74

    Partly Sunny

Today 15 Jul San Juan County

Sunny. Highs in the 70s. Southeast wind to 10 Mph in the morning becoming light.

Tonight 15 Jul San Juan County

Partly cloudy. Lows in the 50s. Southwest wind to 10 Mph becoming south after midnight.

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Armitage Island Temperature Statistics

July Temperature

Friday Harbor Airport (10.6 miles)

  • Lowest 5 July, 2026

    46.9 °F

  • Average July

    58.8 °F

  • Highest 6 July, 2026

    75 °F

Climate (2021–2026)

Friday Harbor Airport (10.6 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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