O Reilly Acres Co Park Reserve Weather Forecast

    • 56
    • 73

    Chance Rain Showers

    • 55
    • 74

    Chance Rain

    • 55
    • 70

    Rain Likely

    • 54
    • 73

    Chance Rain

    • 55
    • 74

    Slight Chance Rain

    • 54
    • 74

    Mostly Cloudy

    • 56
    • 78

    Chance Rain

Today 7 Sep Foothills and Valleys of Snohomish and Northern King Counties

Mostly cloudy. A chance of Showers until late Afternoon, then a slight chance of Showers late in the afternoon. Highs in the upper 60s to mid 70s. Light wind.

Tonight 7 Sep Foothills and Valleys of Snohomish and Northern King Counties

Mostly cloudy with a slight chance of rain. Lows in the mid to upper 50s. Light wind.

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O Reilly Acres Co Park Reserve Temperature Statistics

September Temperature

Arlington Municipal Airport (9.3 miles)

  • Lowest 3 September, 2025

    55 °F

  • Average September

    64.8 °F

  • Highest 3 September, 2025

    81 °F

Climate (2020–Present)

Arlington Municipal Airport (9.3 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    50.6 °F

  • Average High 2020–2025

    59.7 °F
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