Black Diamond Lake Weather Forecast

    • 54
    • 78

    Decreasing Clouds

    • 53
    • 74

    Mostly Cloudy

    • 53
    • 73

    Mostly Cloudy

    • 56
    • 75

    Mostly Cloudy

    • 58
    • 75

    Chance Rain

    • 58
    • 73

    Chance Rain

Today 2 Aug Foothills and Valleys of Pierce and Southern King Counties

Partly sunny. Haze late in the afternoon. Highs near 80. Light wind.

Tonight 2 Aug Foothills and Valleys of Pierce and Southern King Counties

Partly cloudy. Haze in the evening. Lows in the 50s. Light wind.

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Black Diamond Lake Temperature Statistics

August Temperature

Renton Municipal Airport (16.2 miles)

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  • Average August

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Climate (2020–Present)

Renton Municipal Airport (16.2 miles)

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  • Average Low 2020–2025

    47.2 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    62.2 °F
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