Portage Creek Wildlife Reserve Weather Forecast

    • 31
    • 50

    Decreasing Clouds

    • 30
    • 49

    Increasing Clouds

    • 30
    • 47

    Partly Sunny

    • 28
    • 48

    Mostly Sunny

    • 29
    • 47

    Partly Sunny

    • 34
    • 47

    Chance Rain

    • 38
    • 49

    Chance Rain

Today 20 Jan Lowlands of Western Skagit and Northwestern Snohomish Counties

Partly sunny. Patchy fog in the morning. Highs in the mid 40s to lower 50s. Light wind.

Tonight 20 Jan Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly clear. Widespread dense fog after midnight. Lows in the 30s. Light wind.

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Portage Creek Wildlife Reserve Temperature Statistics

January Temperature

Arlington Municipal Airport (1.2 miles)

  • Lowest 18 January, 2026

    25 °F

  • Average January

    43.4 °F

  • Highest 13 January, 2026

    57.9 °F

Climate (2021–Present)

Arlington Municipal Airport (1.2 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    59.8 °F
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