Commencement Bay - Marine Park Weather Forecast

    • 50
    • 61

    Mostly Cloudy

    • 45
    • 62

    Partly Sunny

    • 55
    • 63

    Chance Rain

    • 55
    • 62

    Chance Rain

    • 53
    • 62

    Chance Rain

    • 51
    • 62

    Slight Chance Rain

Today 26 Sep Lowlands of Pierce and Southern King Counties

Mostly sunny. Highs in the mid to upper 60s.

Tonight 26 Sep Lowlands of Pierce and Southern King Counties

Partly cloudy in the evening then becoming mostly cloudy. Lows in the 40s. North wind 10 to 15 Mph.

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Commencement Bay - Marine Park Temperature Statistics

September Temperature

Tacoma, Tacoma Narrows Airport (4.3 miles)

  • Lowest 20 September, 2026

    50 °F

  • Average September

    60.2 °F

  • Highest 9 September, 2026

    79 °F

Climate (2021–2026)

Tacoma, Tacoma Narrows Airport (4.3 miles)

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  • Average Low 2021–2026

    46.5 °F

  • Average 2021–2026

    53.4 °F

  • Average High 2021–2026

    60.6 °F
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