Columbia River - Cooper Island Weather Forecast

    • 64
    • 89

    Mostly Sunny

    • 58
    • 89

    Partly Sunny

    • 53
    • 69

    Partly Sunny

    • 53
    • 72

    Mostly Sunny

    • 56
    • 80

    Partly Sunny

    • 55
    • 77

    Partly Sunny

    • 54
    • 72

    Mostly Sunny

Today 14 Jun Lower Columbia River

Sunny. Highs in the mid 90s. Northeast wind 5 to 10 Mph.

Tonight 14 Jun Lower Columbia River

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

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Columbia River - Cooper Island Temperature Statistics

June Temperature

Southwest Washington Regional Airport (16.8 miles)

  • Lowest 1 June, 2026

    44.1 °F

  • Average June

    59.8 °F

  • Highest 2 June, 2026

    89.1 °F

Climate (2021–Present)

Southwest Washington Regional Airport (16.8 miles)

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  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    62.6 °F
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