Boyle Lake Weather Forecast

    • 49
    • 72

    Sunny

    • 47
    • 73

    Mostly Sunny

    • 48
    • 69

    Mostly Sunny

    • 48
    • 69

    Mostly Sunny

    • 49
    • 71

    Partly Sunny

    • 47
    • 67

    Chance Rain

Today 16 Sep Foothills and Valleys of Snohomish and Northern King Counties

Sunny. Highs in the 70s. Light wind.

Tonight 16 Sep Foothills and Valleys of Snohomish and Northern King Counties

Clear. Lows in the upper 40s to mid 50s. North wind to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Boyle Lake Temperature Statistics

September Temperature

Renton Municipal Airport (22.4 miles)

  • Lowest 6 September, 2026

    51.1 °F

  • Average September

    61.8 °F

  • Highest 9 September, 2026

    79 °F

Climate (2021–2026)

Renton Municipal Airport (22.4 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    62.2 °F
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