Black Diamond Lake Weather Forecast

    • 41
    • 63

    Mostly Sunny

    • 49
    • 76

    Sunny

    • 46
    • 71

    Rain Showers

    • 41
    • 57

    Chance Rain Showers

    • 41
    • 61

    Mostly Sunny

    • 45
    • 69

    Partly Sunny

    • 48
    • 72

    Partly Sunny

Today 30 Apr Foothills and Valleys of Pierce and Southern King Counties

Mostly sunny. Highs in the lower to mid 60s. Light wind.

Tonight 30 Apr Foothills and Valleys of Pierce and Southern King Counties

Mostly clear. Lows in the upper 30s to mid 40s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Black Diamond Lake Temperature Statistics

April Temperature

Renton Municipal Airport (16.2 miles)

  • Lowest 13 April, 2025

    36.6 °F

  • Average April

    53 °F

  • Highest 18 April, 2025

    74.6 °F

Climate (2020–Present)

Renton Municipal Airport (16.2 miles)

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  • Average Low 2020–2025

    47.2 °F

  • Average 2020–2025

    54.3 °F

  • Average High 2020–2025

    62.1 °F
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