Keystone Weather Forecast

    • 38
    • 48

    Increasing Clouds

    • 40
    • 49

    Chance Rain

    • 38
    • 47

    Rain Likely

    • 36
    • 45

    Chance Rain

    • 34
    • 44

    Mostly Cloudy

    • 36
    • 46

    Chance Rain

Today 11 Feb Island County

Mostly sunny. Highs in the mid 40s to lower 50s. Northwest wind to 10 Mph.

Tonight 11 Feb Island County

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 30s to lower 40s. Northwest wind to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Keystone Temperature Statistics

February Temperature

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

  • Lowest 6 February, 2026

    33.1 °F

  • Average February

    46.9 °F

  • Highest 3 February, 2026

    55.9 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    56.1 °F
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