Blakely Island - Thatcher Bay Weather Forecast

    • 60
    • 81

    Decreasing Clouds

    • 55
    • 79

    Decreasing Clouds

    • 53
    • 67

    Mostly Cloudy

    • 51
    • 66

    Rain

    • 53
    • 65

    Slight Chance Rain

    • 53
    • 66

    Mostly Cloudy

    • 53
    • 65

    Mostly Cloudy

Today 23 Jun San Juan County

Mostly sunny. Highs in the upper 70s to mid 80s. North wind 10 to 20 Mph.

Tonight 23 Jun San Juan County

Mostly clear. Lows in the mid 50s to lower 60s. Light wind.

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Blakely Island - Thatcher Bay Temperature Statistics

June Temperature

Friday Harbor Airport (9.3 miles)

  • Lowest 1 June, 2026

    44.1 °F

  • Average June

    58.6 °F

  • Highest 14 June, 2026

    82 °F

Climate (2021–2026)

Friday Harbor Airport (9.3 miles)

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    59.7 °F
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