Columbia River - Trojan Nuclear Plant Weather Forecast

    • 34
    • 52

    Rain Showers

    • 33
    • 55

    Mostly Sunny

    • 37
    • 62

    Partly Sunny

    • 39
    • 62

    Mostly Cloudy

    • 40
    • 59

    Chance Rain

    • 36
    • 56

    Chance Rain

Today 25 Mar Lower Columbia River

Partly sunny this morning. A slight chance of Thunderstorms. A chance of rain Showers this Morning, then rain Showers this afternoon. Highs in the lower 50s. South wind 5 to 10 Mph, becoming west this afternoon. Chance of rain near 100 percent. Rainfall Amounts around a tenth of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 25 Mar Lower Columbia River

Partly cloudy. A slight chance of rain Showers in the evening. Areas of frost with patchy fog after midnight. Lows in the mid 30s. West wind 5 to 10 Mph in the Evening, becoming light and variable. Chance of rain 20 percent.

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Columbia River - Trojan Nuclear Plant Temperature Statistics

March Temperature

Southwest Washington Regional Airport (5 miles)

  • Lowest 22 March, 2026

    28.9 °F

  • Average March

    47.4 °F

  • Highest 16 March, 2026

    66 °F

Climate (2021–Present)

Southwest Washington Regional Airport (5 miles)

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  • Average Low 2021–2026

    45.1 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    62.5 °F
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