Tri-Cities Airport Weather Forecast

    • 34
    • 67

    Partly Sunny

    • 36
    • 71

    Mostly Sunny

    • 39
    • 73

    Mostly Sunny

    • 41
    • 73

    Mostly Sunny

    • 38
    • 74

    Mostly Sunny

    • 38
    • 66

    Partly Sunny

Today 13 Oct Lower Columbia Basin of Washington

Sunny. Areas of frost in the morning. Highs in the lower to mid 60s. Light wind.

Tonight 13 Oct Lower Columbia Basin of Washington

Partly cloudy. Lows in the mid 30s to lower 40s. Light wind.

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Tri-Cities Airport Temperature Statistics

October Temperature

Tri-Cities Airport (0 miles)

  • Lowest 11 October, 2026

    37 °F

  • Average October

    60.6 °F

  • Highest 5 October, 2026

    84.7 °F

Climate (2021–2026)

Tri-Cities Airport (0 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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