Rosario Head Weather Forecast

    • 47
    • 54

    Dense Fog

    • 45
    • 51

    Dense Fog

    • 41
    • 49

    Partly Sunny

    • 40
    • 48

    Mostly Sunny

    • 39
    • 49

    Mostly Sunny

    • 40
    • 48

    Mostly Sunny

    • 40
    • 47

    Mostly Cloudy

Today 13 Jan Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly cloudy. Highs in the 50s to lower 60s. Southeast wind to 10 Mph in the morning becoming light.

Tonight 13 Jan Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly cloudy. Areas of fog in the Evening, then widespread dense fog in the late evening and early morning. Areas of fog late in the night. Lows in the 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

    43.7 °F

  • Highest 3 January, 2026

    53.1 °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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