Lopez Island Weather Forecast

    • 47
    • 62

    Partly Sunny

    • 47
    • 63

    Mostly Cloudy

    • 48
    • 59

    Chance Rain

    • 46
    • 58

    Partly Sunny

    • 45
    • 59

    Partly Sunny

    • 46
    • 61

    Mostly Sunny

    • 46
    • 61

    Mostly Sunny

Today 19 Apr San Juan County

Partly sunny. Highs in the upper 50s to mid 60s. Light wind becoming north to 10 Mph in the afternoon.

Tonight 19 Apr San Juan County

Partly cloudy. Lows in the mid 40s to lower 50s. North wind to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lopez Island Temperature Statistics

April Temperature

Friday Harbor Airport (5 miles)

  • Lowest 15 April, 2026

    33.1 °F

  • Average April

    47.6 °F

  • Highest 5 April, 2026

    62.1 °F

Climate (2021–Present)

Friday Harbor Airport (5 miles)

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    59.6 °F
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