San Juan Island - Friday Harbor Weather Forecast

    • 38
    • 49

    Chance Rain

    • 38
    • 45

    Partly Sunny

    • 37
    • 47

    Mostly Sunny

    • 39
    • 49

    Partly Sunny

    • 43
    • 49

    Rain

    • 42
    • 50

    Rain

Today 27 Feb San Juan County

Partly sunny. A chance of rain in the Morning, then a slight chance of rain early in the afternoon. A chance of rain late in the afternoon. Highs near 50. Southwest wind 10 to 15 Mph.

Tonight 27 Feb San Juan County

Partly cloudy. Lows in the mid 30s to lower 40s. West wind around 10 Mph in the evening becoming light.

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San Juan Island - Friday Harbor Temperature Statistics

February Temperature

Friday Harbor Airport (1.9 miles)

  • Lowest 19 February, 2026

    26.1 °F

  • Average February

    43.2 °F

  • Highest 4 February, 2026

    54 °F

Climate (2021–Present)

Friday Harbor Airport (1.9 miles)

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  • Average Low 2021–2026

    44.4 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    59.7 °F
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