Lopez Island - McArdle Bay Weather Forecast

    • 54
    • 69

    Increasing Clouds

    • 53
    • 68

    Gradual Clearing

    • 53
    • 66

    Partly Sunny

    • 54
    • 67

    Mostly Sunny

    • 54
    • 70

    Partly Sunny

    • 55
    • 69

    Partly Sunny

    • 56
    • 71

    Partly Sunny

Today 7 Aug San Juan County

Sunny. Highs in the upper 60s to mid 70s. Light wind.

Tonight 7 Aug San Juan County

Partly cloudy until early morning then becoming mostly cloudy. Lows in the 50s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lopez Island - McArdle Bay Temperature Statistics

August Temperature

Whidbey Island Naval Air Station - Ault Field (8.7 miles)

  • Lowest 3 August, 2026

    48 °F

  • Average August

    59.1 °F

  • Highest 5 August, 2026

    69.1 °F

Climate (2021–2026)

Whidbey Island Naval Air Station - Ault Field (8.7 miles)

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  • Average Low 2021–2026

    44.4 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    56 °F
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