Columbia River - Trojan Nuclear Plant Weather Forecast

    • 54
    • 81

    Mostly Sunny

    • 56
    • 85

    Mostly Sunny

    • 58
    • 88

    Mostly Sunny

    • 59
    • 87

    Partly Sunny

    • 59
    • 80

    Mostly Cloudy

    • 56
    • 80

    Partly Sunny

    • 55
    • 80

    Partly Sunny

Today 27 Jul Lower Columbia River

Mostly sunny. Highs in the lower 80s. Light and variable Winds, becoming light this afternoon.

Tonight 27 Jul Lower Columbia River

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 50s. Winds light.

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Columbia River - Trojan Nuclear Plant Temperature Statistics

July Temperature

Southwest Washington Regional Airport (5 miles)

  • Lowest 5 July, 2025

    48 °F

  • Average July

    66.8 °F

  • Highest 13 July, 2025

    95 °F

Climate (2020–Present)

Southwest Washington Regional Airport (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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