Sunday Lake Weather Forecast

    • 40
    • 57

    Decreasing Clouds

    • 37
    • 57

    Mostly Sunny

    • 41
    • 55

    Mostly Cloudy

    • 42
    • 58

    Chance Rain

    • 40
    • 58

    Slight Chance Rain

    • 39
    • 57

    Mostly Cloudy

    • 37
    • 57

    Slight Chance Rain

Today 22 Oct Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly sunny. Highs in the mid to upper 50s.

Tonight 22 Oct Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly cloudy in the evening then becoming partly cloudy. Lows in the upper 30s to mid 40s. Northwest wind 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sunday Lake Temperature Statistics

October Temperature

Arlington Municipal Airport (6.2 miles)

  • Lowest 12 October, 2026

    32 °F

  • Average October

    53 °F

  • Highest 16 October, 2026

    78.1 °F

Climate (2021–2026)

Arlington Municipal Airport (6.2 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    60 °F
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