Tri-Cities Airport Weather Forecast

    • 36
    • 66

    Increasing Clouds

    • 37
    • 65

    Mostly Cloudy

    • 36
    • 69

    Partly Sunny

    • 38
    • 67

    Partly Sunny

    • 36
    • 66

    Chance Rain Showers

    • 30
    • 62

    Mostly Sunny

    • 32
    • 58

    Partly Sunny

Today 18 Oct Lower Columbia Basin of Washington

Sunny. Highs in the mid 60s. North wind 5 to 10 Mph.

Tonight 18 Oct Lower Columbia Basin of Washington

Mostly cloudy. Lows in the upper 30s to lower 40s. North wind 5 to 10 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

    29.6 °F

  • Average October

    57.1 °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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