Heritage Weather Forecast

    • 51
    • 71

    Mostly Cloudy

    • 51
    • 72

    Chance Rain

    • 52
    • 74

    Partly Sunny

    • 54
    • 73

    Mostly Cloudy

    • 53
    • 72

    Partly Sunny

    • 54
    • 75

    Partly Sunny

Today 4 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Partly sunny. A chance of Showers in the morning. Highs in the 60s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 4 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly cloudy. A slight chance of Showers in the morning. Lows in the upper 40s to mid 50s. Northwest wind to 10 Mph in the evening becoming light.

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Heritage Temperature Statistics

September Temperature

Arlington Municipal Airport (10.6 miles)

  • Lowest 1 September, 2026

    51.1 °F

  • Average September

    61.1 °F

  • Highest 1 September, 2026

    70 °F

Climate (2021–2026)

Arlington Municipal Airport (10.6 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.9 °F
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