Northwest Island Weather Forecast

    • 49
    • 62

    Increasing Clouds

    • 49
    • 63

    Mostly Cloudy

    • 50
    • 65

    Partly Sunny

    • 51
    • 67

    Partly Sunny

    • 51
    • 67

    Partly Sunny

    • 50
    • 64

    Partly Sunny

    • 49
    • 62

    Mostly Cloudy

Today 18 May Lowlands of Western Skagit and Northwestern Snohomish Counties

Partly sunny. Highs in the 60s. South wind to 10 Mph becoming west around 10 Mph in the afternoon.

Tonight 18 May Lowlands of Western Skagit and Northwestern Snohomish Counties

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog late in the night. Lows in the mid 40s to lower 50s. Southwest wind to 10 Mph becoming south after midnight.

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  • Temperature Forecast NOAA

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Northwest Island Temperature Statistics

May Temperature

Whidbey Island Naval Air Station - Ault Field (4.3 miles)

  • Lowest 16 May, 2026

    44.1 °F

  • Average May

    53.1 °F

  • Highest 3 May, 2026

    66.9 °F

Climate (2021–Present)

Whidbey Island Naval Air Station - Ault Field (4.3 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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