Fort Casey Weather Forecast

    • 50
    • 63

    Decreasing Clouds

    • 52
    • 68

    Rain Likely

    • 44
    • 60

    Rain Likely

    • 47
    • 56

    Mostly Cloudy

    • 46
    • 55

    Mostly Cloudy

    • 45
    • 55

    Partly Sunny

Today 15 Oct Island County

Mostly sunny. Patchy fog in the morning. Highs in the 60s. Light wind.

Tonight 15 Oct Island County

Mostly clear. Lows in the mid 40s to lower 50s. Light wind.

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  • Temperature Real-Time

Fort Casey Temperature Statistics

October Temperature

Whidbey Island Naval Air Station - Ault Field (13 miles)

  • Lowest 11 October, 2026

    37.9 °F

  • Average October

    52.2 °F

  • Highest 5 October, 2026

    64.9 °F

Climate (2021–2026)

Whidbey Island Naval Air Station - Ault Field (13 miles)

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  • Average Low 2021–2026

    44.4 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    55.9 °F
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