Lake Marcel-Stillwater Weather Forecast

    • 48
    • 69

    Chance Rain

    • 51
    • 70

    Partly Sunny

    • 52
    • 67

    Mostly Cloudy

    • 51
    • 71

    Partly Sunny

    • 54
    • 78

    Mostly Sunny

    • 53
    • 76

    Chance Rain

Today 5 Sep Foothills and Valleys of Central King County

Partly sunny. A chance of Showers and a slight chance of Thunderstorms late in the afternoon. Highs near 70. Light wind.

Tonight 5 Sep Foothills and Valleys of Central King County

Mostly cloudy with a chance of rain in the Evening, then mostly cloudy after midnight. Lows near 50. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Marcel-Stillwater Temperature Statistics

September Temperature

Renton Municipal Airport (19.3 miles)

  • Lowest 2 September, 2026

    55 °F

  • Average September

    61.8 °F

  • Highest 2 September, 2026

    69.1 °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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