Rosario Head Weather Forecast

    • 41
    • 49

    Mostly Sunny

    • 40
    • 48

    Mostly Sunny

    • 39
    • 47

    Mostly Sunny

    • 39
    • 47

    Partly Sunny

    • 39
    • 46

    Mostly Cloudy

    • 39
    • 46

    Mostly Cloudy

    • 38
    • 44

    Mostly Cloudy

Today 16 Jan Lowlands of Western Skagit and Northwestern Snohomish Counties

Sunny. Highs in the upper 40s to mid 50s. Light wind.

Tonight 16 Jan Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly clear. Lows in the mid 30s to lower 40s. Light wind.

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Rosario Head Temperature Statistics

January Temperature

Whidbey Island Naval Air Station - Ault Field (3.7 miles)

  • Lowest 1 January, 2026

    30 °F

  • Average January

    45.1 °F

  • Highest 13 January, 2026

    55 °F

Climate (2021–Present)

Whidbey Island Naval Air Station - Ault Field (3.7 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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