Lopez Island - Spencer Spit Weather Forecast

    • 50
    • 63

    Rain Likely

    • 49
    • 63

    Slight Chance Rain

    • 48
    • 63

    Mostly Cloudy

    • 48
    • 63

    Mostly Cloudy

Today 24 Sep San Juan County

Cloudy. A chance of rain late in the afternoon. Highs in the upper 50s to mid 60s. North wind to 10 Mph increasing to 10 to 15 Mph in the afternoon.

Tonight 24 Sep San Juan County

Rain likely in the Evening, then rain in the late evening and early morning. Rain likely in the morning. Rainfall Amounts a quarter to a half inch possible. Lows in the mid 40s to lower 50s. North wind 10 to 15 Mph in the evening becoming light.

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Lopez Island - Spencer Spit Temperature Statistics

September Temperature

Friday Harbor Airport (7.5 miles)

  • Lowest 21 September, 2026

    46 °F

  • Average September

    57.8 °F

  • Highest 6 September, 2026

    73 °F

Climate (2021–2026)

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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