Columbia River - Sandy Island Weather Forecast

    • 63
    • 80

    Rain Showers

    • 64
    • 74

    Rain

    • 58
    • 77

    Chance Rain Showers

    • 57
    • 79

    Mostly Cloudy

    • 57
    • 77

    Mostly Cloudy

    • 57
    • 80

    Mostly Sunny

    • 55
    • 82

    Mostly Sunny

Today 14 Aug Lower Columbia River

Partly sunny. Highs around 80. West wind 5 to 10 Mph.

Tonight 14 Aug Lower Columbia River

A chance of rain this Evening, then rain likely after midnight. Lows in the lower 60s. West wind 5 to 10 Mph, becoming light after midnight. Chance of rain 70 percent. Rainfall Amounts around a tenth of an inch.

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Columbia River - Sandy Island Temperature Statistics

August Temperature

Southwest Washington Regional Airport (7.5 miles)

  • Lowest 8 August, 2025

    50 °F

  • Average August

    68.8 °F

  • Highest 12 August, 2025

    99 °F

Climate (2020–Present)

Southwest Washington Regional Airport (7.5 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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