Beaver Slough - Anunde Island Weather Forecast

    • 46
    • 66

    Mostly Sunny

    • 51
    • 65

    Mostly Cloudy

    • 54
    • 62

    Chance Rain

    • 52
    • 65

    Mostly Cloudy

    • 52
    • 66

    Mostly Cloudy

    • 50
    • 65

    Partly Sunny

Today 27 Sep Lower Columbia River

Partly sunny this Morning, then clearing. Highs in the upper 60s. North wind 5 to 10 Mph.

Tonight 27 Sep Lower Columbia River

Mostly clear. Lows in the mid 40s. Winds light.

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Beaver Slough - Anunde Island Temperature Statistics

September Temperature

Southwest Washington Regional Airport (15.5 miles)

  • Lowest 24 September, 2026

    46.9 °F

  • Average September

    60.8 °F

  • Highest 9 September, 2026

    86 °F

Climate (2021–2026)

Southwest Washington Regional Airport (15.5 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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