Seaquest State Park Weather Forecast

    • 50
    • 76

    Becoming Sunny

    • 53
    • 81

    Mostly Sunny

    • 48
    • 70

    Partly Sunny

    • 48
    • 66

    Chance Rain

    • 48
    • 66

    Chance Rain

    • 49
    • 70

    Partly Sunny

Today 8 Sep South Washington Cascade Foothills

Sunny. Highs in the upper 70s. Winds light.

Tonight 8 Sep South Washington Cascade Foothills

Clear. Lows in the lower 50s. Northeast wind 5 to 10 Mph.

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Seaquest State Park Temperature Statistics

September Temperature

Southwest Washington Regional Airport (13 miles)

  • Lowest 4 September, 2026

    48 °F

  • Average September

    59.4 °F

  • Highest 5 September, 2026

    73.9 °F

Climate (2021–2026)

Southwest Washington Regional Airport (13 miles)

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  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    62.4 °F
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