Charles Island Weather Forecast

    • 40
    • 48

    Rain Likely

    • 39
    • 48

    Rain

    • 41
    • 49

    Rain Likely

    • 42
    • 51

    Rain

    • 42
    • 50

    Rain

    • 41
    • 50

    Rain

Today 16 Mar San Juan County

Partly sunny. Rain likely in the Morning, then a chance of rain in the late morning and early afternoon. Rain likely late in the afternoon. Rainfall Amounts less than a tenth of an inch likely. Highs in the mid 40s to lower 50s. South wind 10 to 15 Mph.

Tonight 16 Mar San Juan County

Mostly cloudy with a chance of rain. Lows in the mid 30s to lower 40s. Southwest wind around 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Charles Island Temperature Statistics

March Temperature

Friday Harbor Airport (7.5 miles)

  • Lowest 10 March, 2025

    35.1 °F

  • Average March

    46.3 °F

  • Highest 1 March, 2025

    65.6 °F

Climate (2020–Present)

Friday Harbor Airport (7.5 miles)

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  • Average Low 2020–2025

    44.2 °F

  • Average 2020–2025

    51.4 °F

  • Average High 2020–2025

    59.2 °F
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