Tri-Cities Airport Weather Forecast

    • 36
    • 72

    Decreasing Clouds

    • 37
    • 66

    Partly Sunny

    • 36
    • 64

    Mostly Cloudy

    • 34
    • 67

    Mostly Sunny

    • 36
    • 66

    Mostly Sunny

    • 37
    • 67

    Partly Sunny

    • 32
    • 64

    Partly Sunny

Today 17 Oct Lower Columbia Basin of Washington

Mostly sunny with a 20 percent chance of rain Showers. Highs in the mid to upper 50s.

Tonight 17 Oct Lower Columbia Basin of Washington

Partly cloudy. Lows in the mid 30s to lower 40s. Northwest wind 5 to 10 Mph with Gusts to around 20 Mph in the Evening, becoming light.

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Tri-Cities Airport Temperature Statistics

October Temperature

Tri-Cities Airport (0 miles)

  • Lowest 13 October, 2026

    30.9 °F

  • Average October

    57.3 °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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