Columbia River - Sand Island Marine Park Weather Forecast

    • 56
    • 78

    Increasing Clouds

    • 55
    • 74

    Mostly Cloudy

    • 53
    • 71

    Partly Sunny

    • 52
    • 69

    Mostly Cloudy

    • 53
    • 69

    Mostly Cloudy

    • 50
    • 64

    Partly Sunny

Today 20 Sep Lower Columbia River

Sunny. Highs in the lower 80s. Northwest wind 5 to 10 Mph.

Tonight 20 Sep Lower Columbia River

Mostly clear. Lows in the mid 50s. Northwest wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Columbia River - Sand Island Marine Park Temperature Statistics

September Temperature

Scappoose Industrial Airpark (7.5 miles)

  • Lowest 18 September, 2026

    48 °F

  • Average September

    62.2 °F

  • Highest 9 September, 2026

    87.7 °F

Climate (2021–2026)

Scappoose Industrial Airpark (7.5 miles)

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  • Average Low 2021–2026

    43.9 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    63.4 °F
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