Black Diamond Weather Forecast

    • 52
    • 71

    Rain Showers Likely

    • 46
    • 66

    Rain Showers Likely

    • 52
    • 74

    Partly Sunny

    • 54
    • 86

    Mostly Sunny

    • 50
    • 73

    Chance Rain Showers

    • 53
    • 78

    Mostly Sunny

Today 25 May Foothills and Valleys of Pierce and Southern King Counties

Partly sunny. Highs in the lower 70s. Light wind becoming west around 10 Mph in the afternoon.

Tonight 25 May Foothills and Valleys of Pierce and Southern King Counties

Mostly cloudy. A slight chance of Showers until early Morning, then a chance of Showers in the morning. Lows in the lower to mid 50s. West wind around 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Black Diamond Temperature Statistics

May Temperature

Renton Municipal Airport (16.2 miles)

  • Lowest 4 May, 2025

    41.6 °F

  • Average May

    56.7 °F

  • Highest 6 May, 2025

    78.7 °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 °F
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