Keystone Weather Forecast

    • 47
    • 63

    Increasing Clouds

    • 49
    • 64

    Decreasing Clouds

    • 52
    • 67

    Rain Likely

    • 49
    • 63

    Rain Likely

    • 49
    • 63

    Mostly Cloudy

    • 49
    • 60

    Rain Likely

    • 50
    • 62

    Chance Rain

Today 15 Jun Island County

Mostly sunny. Highs in the 60s. West wind to 10 Mph.

Tonight 15 Jun Island County

Mostly clear. Lows in the mid 40s to lower 50s. West wind to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Keystone Temperature Statistics

June Temperature

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

  • Lowest 2 June, 2025

    43 °F

  • Average June

    56.2 °F

  • Highest 8 June, 2025

    73.9 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    44.6 °F

  • Average 2020–2025

    50.2 °F

  • Average High 2020–2025

    56.3 °F
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