Riverton-Boulevard Park Weather Forecast

    • 55
    • 70

    Mostly Cloudy

    • 55
    • 68

    Mostly Cloudy

    • 55
    • 68

    Chance Rain

    • 54
    • 71

    Partly Sunny

    • 54
    • 72

    Mostly Sunny

    • 55
    • 72

    Partly Sunny

Today 10 Sep Lowlands of Pierce and Southern King Counties

Mostly cloudy. Highs in the mid 60s to lower 70s. Light wind becoming northwest to 10 Mph in the afternoon.

Tonight 10 Sep Lowlands of Pierce and Southern King Counties

Mostly cloudy. Lows in the mid to upper 50s. Light wind.

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Riverton-Boulevard Park Temperature Statistics

September Temperature

Boeing Field - King County International Airport (2.5 miles)

  • Lowest 5 September, 2026

    53.1 °F

  • Average September

    62.1 °F

  • Highest 6 September, 2026

    73 °F

Climate (2021–2026)

Boeing Field - King County International Airport (2.5 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    54.2 °F

  • Average High 2021–2026

    61.6 °F
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