Bass Lake Weather Forecast

    • 55
    • 78

    Mostly Cloudy

    • 51
    • 69

    Mostly Cloudy

    • 51
    • 66

    Chance Rain

    • 50
    • 65

    Rain Likely

    • 49
    • 67

    Partly Sunny

    • 50
    • 69

    Partly Sunny

    • 51
    • 71

    Mostly Cloudy

Today 9 Sep Foothills and Valleys of Pierce and Southern King Counties

Mostly sunny. Patchy fog in the morning. Highs in the mid 70s to lower 80s. Light wind.

Tonight 9 Sep Foothills and Valleys of Pierce and Southern King Counties

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

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  • Temperature Real-Time

Bass Lake Temperature Statistics

September Temperature

Renton Municipal Airport (19.3 miles)

  • Lowest 6 September, 2026

    51.1 °F

  • Average September

    61.2 °F

  • Highest 6 September, 2026

    73.9 °F

Climate (2021–2026)

Renton Municipal Airport (19.3 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    62.2 °F
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