Seaquest State Park Weather Forecast

    • 46
    • 65

    Mostly Cloudy

    • 48
    • 76

    Mostly Sunny

    • 49
    • 80

    Mostly Sunny

    • 48
    • 75

    Mostly Sunny

    • 49
    • 76

    Partly Sunny

    • 49
    • 76

    Partly Sunny

Today 15 Sep South Washington Cascade Foothills

Partly sunny. Highs in the mid 60s. Winds light.

Tonight 15 Sep South Washington Cascade Foothills

Partly cloudy in the Evening, then becoming mostly clear. Lows in the upper 40s. Winds light.

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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

    60.9 °F

  • Highest 9 September, 2026

    86 °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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