Columbia River - Deer Island Point Weather Forecast

    • 62
    • 85

    Mostly Sunny

    • 63
    • 84

    Chance Rain Showers

    • 61
    • 76

    Chance Rain Showers

    • 60
    • 77

    Mostly Cloudy

    • 60
    • 74

    Chance Rain Showers

    • 59
    • 71

    Chance Rain Showers

Today 4 Sep Lower Columbia River

Sunny, hazy. Areas of smoke in the afternoon. Highs around 90. Winds light.

Tonight 4 Sep Lower Columbia River

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 60s. Northwest wind 5 to 10 Mph.

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Columbia River - Deer Island Point Temperature Statistics

September Temperature

Southwest Washington Regional Airport (10.6 miles)

  • Lowest 1 September, 2025

    60.1 °F

  • Average September

    65.9 °F

  • Highest 1 September, 2025

    77 °F

Climate (2020–Present)

Southwest Washington Regional Airport (10.6 miles)

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  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    62.3 °F
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