Lopez Island - Cape Saint Mary Weather Forecast

    • 49
    • 56

    Chance Rain

    • 46
    • 57

    Chance Rain

    • 47
    • 55

    Rain

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    • 56

    Rain

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    • 56

    Rain Likely

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    • 56

    Chance Rain

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    • 55

    Rain Likely

Today 16 Oct San Juan County

Mostly sunny. Highs in the mid 50s to lower 60s. South wind to 10 Mph.

Tonight 16 Oct San Juan County

Mostly cloudy with a slight chance of rain in the Evening, then mostly cloudy with a chance of rain after midnight. Lows in the mid to upper 40s. South wind 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lopez Island - Cape Saint Mary Temperature Statistics

October Temperature

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

  • Lowest 14 October, 2025

    35.1 °F

  • Average October

    51.9 °F

  • Highest 2 October, 2025

    70 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    44.5 °F

  • Average 2020–2025

    50.1 °F

  • Average High 2020–2025

    56.1 °F
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