Weallup Lake Weather Forecast

    • 50
    • 65

    Mostly Cloudy

    • 49
    • 65

    Mostly Cloudy

    • 49
    • 62

    Mostly Cloudy

    • 47
    • 62

    Slight Chance Rain

    • 47
    • 63

    Partly Sunny

Today 22 Sep Downtown Everett / Marysville Area

Mostly cloudy in the morning then becoming mostly sunny. Highs in the 60s. Light wind.

Tonight 22 Sep Downtown Everett / Marysville Area

Mostly cloudy. A slight chance of rain after midnight. Lows near 50. Light wind becoming southeast around 10 Mph after midnight.

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Weallup Lake Temperature Statistics

September Temperature

Arlington Municipal Airport (7.5 miles)

  • Lowest 16 September, 2026

    44.1 °F

  • Average September

    59.5 °F

  • Highest 9 September, 2026

    78.1 °F

Climate (2021–2026)

Arlington Municipal Airport (7.5 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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