Lake Bosworth Weather Forecast

    • 55
    • 77

    Chance Rain Showers

    • 56
    • 81

    Mostly Sunny

    • 57
    • 84

    Mostly Sunny

    • 54
    • 82

    Mostly Sunny

    • 53
    • 76

    Partly Sunny

    • 52
    • 76

    Partly Sunny

    • 52
    • 78

    Mostly Sunny

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

Mostly sunny. A slight chance of Showers in the morning. A slight chance of Thunderstorms in the afternoon. A chance of Showers late in the afternoon. Highs in the 70s. Light wind.

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

Mostly cloudy. A slight chance of Thunderstorms in the Evening, then a slight chance of Showers late in the evening. A slight chance of Showers in the morning. Lows in the mid to upper 50s. Light wind.

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Lake Bosworth Temperature Statistics

July Temperature

Arlington Municipal Airport (11.8 miles)

  • Lowest 4 July, 2025

    46 °F

  • Average July

    64.9 °F

  • Highest 16 July, 2025

    91 °F

Climate (2020–Present)

Arlington Municipal Airport (11.8 miles)

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  • Average Low 2020–2025

    42.3 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    59.7 °F
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