Columbia River - Trojan Nuclear Plant Weather Forecast

    • 57
    • 82

    Increasing Clouds

    • 56
    • 82

    Partly Sunny

    • 57
    • 83

    Partly Sunny

    • 57
    • 82

    Mostly Cloudy

    • 56
    • 78

    Mostly Cloudy

    • 57
    • 78

    Mostly Cloudy

Today 14 Aug Lower Columbia River

Partly sunny this Morning, then clearing. Highs in the mid 80s. Northwest wind 5 to 10 Mph.

Tonight 14 Aug Lower Columbia River

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 50s. Northwest wind 5 to 10 Mph.

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Columbia River - Trojan Nuclear Plant Temperature Statistics

August Temperature

Southwest Washington Regional Airport (5 miles)

  • Lowest 9 August, 2026

    54 °F

  • Average August

    69.1 °F

  • Highest 5 August, 2026

    93.9 °F

Climate (2021–2026)

Southwest Washington Regional Airport (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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