Rosario Head Weather Forecast

    • 49
    • 59

    Mostly Cloudy

    • 49
    • 59

    Mostly Cloudy

    • 49
    • 60

    Partly Sunny

    • 51
    • 62

    Mostly Cloudy

    • 51
    • 62

    Partly Sunny

    • 49
    • 60

    Chance Rain

Today 9 May Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly sunny. Highs in the 60s. Light wind becoming northwest to 10 Mph in the afternoon.

Tonight 9 May Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly cloudy. Lows near 50. Northwest wind to 10 Mph in the evening becoming light.

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Rosario Head Temperature Statistics

May Temperature

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

  • Lowest 1 May, 2026

    46.9 °F

  • Average May

    53.7 °F

  • Highest 3 May, 2026

    66.9 °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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