Federal Way Weather Forecast

    • 54
    • 76

    Becoming Sunny

    • 54
    • 72

    Mostly Sunny

    • 54
    • 74

    Partly Sunny

    • 56
    • 69

    Chance Rain

    • 55
    • 69

    Chance Rain

    • 53
    • 70

    Chance Rain

Today 17 Sep Lowlands of Pierce and Southern King Counties

Sunny. Highs in the upper 60s to mid 70s. South wind to 10 Mph becoming west in the afternoon.

Tonight 17 Sep Lowlands of Pierce and Southern King Counties

Mostly clear. Lows in the lower to mid 50s. North wind to 10 Mph.

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Federal Way Temperature Statistics

September Temperature

Seattle, Seattle-Tacoma International Airport (9.3 miles)

  • Lowest 10 September, 2025

    55.9 °F

  • Average September

    64.6 °F

  • Highest 3 September, 2025

    82 °F

Climate (2020–Present)

Seattle, Seattle-Tacoma International Airport (9.3 miles)

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  • Average Low 2020–2025

    46.6 °F

  • Average 2020–2025

    53.3 °F

  • Average High 2020–2025

    61.1 °F
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