Alder Lake Park Weather Forecast

    • 48
    • 71

    Mostly Sunny

    • 50
    • 71

    Mostly Sunny

    • 50
    • 73

    Mostly Sunny

    • 49
    • 68

    Partly Sunny

    • 47
    • 65

    Mostly Cloudy

    • 48
    • 65

    Partly Sunny

Today 18 Sep Foothills and Valleys of Pierce and Southern King Counties

Sunny. Highs in the lower to mid 70s. Light wind.

Tonight 18 Sep Foothills and Valleys of Pierce and Southern King Counties

Partly cloudy. Lows near 50. Light wind.

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Alder Lake Park Temperature Statistics

September Temperature

Fort Lewis / Gray U. S. Army Airfield (24.9 miles)

  • Lowest 16 September, 2026

    46 °F

  • Average September

    60.8 °F

  • Highest 9 September, 2026

    82.6 °F

Climate (2021–2026)

Fort Lewis / Gray U. S. Army Airfield (24.9 miles)

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  • Average Low 2021–2026

    42.8 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    61.4 °F
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