Benton City Weather Forecast

    • 51
    • 82

    Becoming Sunny

    • 53
    • 78

    Mostly Cloudy

    • 56
    • 79

    Rain Showers Likely

    • 46
    • 71

    Rain Showers Likely

    • 47
    • 67

    Partly Sunny

    • 46
    • 69

    Partly Sunny

    • 48
    • 70

    Partly Sunny

Today 22 Sep Lower Columbia Basin of Washington

Partly cloudy. Highs in the upper 70s to lower 80s. Southwest wind 5 to 10 Mph with Gusts to around 20 Mph.

Tonight 22 Sep Lower Columbia Basin of Washington

Mostly clear. Lows in the upper 40s to lower 50s. Southwest wind 5 to 10 Mph. Gusts up to 20 Mph in the evening.

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Benton City Temperature Statistics

September Temperature

Tri-Cities Airport (17.4 miles)

  • Lowest 8 September, 2026

    44.7 °F

  • Average September

    65.1 °F

  • Highest 10 September, 2026

    90.6 °F

Climate (2021–2026)

Tri-Cities Airport (17.4 miles)

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  • Average Low 2021–2026

    42.8 °F

  • Average 2021–2026

    55.4 °F

  • Average High 2021–2026

    68 °F
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