Friday Harbor Weather Forecast

    • 50
    • 69

    Mostly Sunny

    • 52
    • 74

    Mostly Sunny

    • 53
    • 76

    Mostly Sunny

    • 53
    • 77

    Chance Rain

    • 53
    • 73

    Slight Chance Rain

    • 54
    • 75

    Mostly Sunny

Today 12 Jul San Juan County

Sunny. Highs in the 60s to lower 70s. Southwest wind to 10 Mph in the morning becoming light.

Tonight 12 Jul San Juan County

Mostly clear. Lows in the lower to mid 50s. Light wind.

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Friday Harbor Temperature Statistics

July Temperature

Friday Harbor Airport (0.6 miles)

  • Lowest 5 July, 2026

    46.9 °F

  • Average July

    58.6 °F

  • Highest 6 July, 2026

    75 °F

Climate (2021–2026)

Friday Harbor Airport (0.6 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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