O'Brians Lake Weather Forecast

    • 52
    • 69

    Mostly Cloudy

    • 50
    • 66

    Mostly Cloudy

    • 48
    • 65

    Mostly Cloudy

    • 49
    • 60

    Rain Likely

    • 45
    • 60

    Chance Rain

    • 45
    • 62

    Mostly Cloudy

    • 47
    • 62

    Partly Sunny

Today 21 Sep Foothills and Valleys of Snohomish and Northern King Counties

Mostly cloudy with a chance of rain. Highs in the lower to mid 60s.

Tonight 21 Sep Foothills and Valleys of Snohomish and Northern King Counties

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 40s to mid 50s. Light wind.

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O'Brians Lake Temperature Statistics

September Temperature

Everett Snohomish County (17.4 miles)

  • Lowest 16 September, 2026

    51.1 °F

  • Average September

    59.4 °F

  • Highest 9 September, 2026

    73.9 °F

Climate (2021–2026)

Everett Snohomish County (17.4 miles)

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  • Average Low 2021–2026

    46.5 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    59.2 °F
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