Tri-Cities Airport Weather Forecast

    • 35
    • 63

    Increasing Clouds

    • 35
    • 60

    Mostly Cloudy

    • 32
    • 62

    Mostly Sunny

    • 36
    • 67

    Mostly Sunny

    • 37
    • 71

    Mostly Sunny

    • 37
    • 71

    Mostly Sunny

Today 10 Oct Lower Columbia Basin of Washington

Sunny. Highs in the upper 50s to lower 60s. Southwest wind 5 to 10 Mph.

Tonight 10 Oct Lower Columbia Basin of Washington

Mostly clear. Lows in the mid 30s to lower 40s. Light Wind, becoming north 5 to 10 Mph with Gusts to around 30 Mph overnight.

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Tri-Cities Airport Temperature Statistics

October Temperature

Tri-Cities Airport (0 miles)

  • Lowest 7 October, 2026

    41 °F

  • Average October

    62 °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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