Charles Island Weather Forecast

    • 51
    • 66

    Mostly Sunny

    • 53
    • 65

    Mostly Sunny

    • 54
    • 68

    Mostly Sunny

    • 54
    • 69

    Mostly Sunny

    • 54
    • 68

    Mostly Sunny

    • 55
    • 69

    Mostly Sunny

Today 16 Jun San Juan County

Sunny. Highs in the upper 60s to mid 70s. Southwest wind 10 to 15 Mph becoming west 10 to 20 Mph in the afternoon. Gusts to 30 Mph.

Tonight 16 Jun San Juan County

Mostly clear. Lows in the upper 40s to mid 50s. West wind 10 to 15 Mph with Gusts to 30 Mph becoming southwest with Gusts to 20 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Charles Island Temperature Statistics

June Temperature

Friday Harbor Airport (7.5 miles)

  • Lowest 1 June, 2026

    44.1 °F

  • Average June

    57.1 °F

  • Highest 2 June, 2026

    79 °F

Climate (2021–Present)

Friday Harbor Airport (7.5 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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