Tri-Cities Airport Weather Forecast

    • 35
    • 54

    Mostly Cloudy

    • 31
    • 57

    Partly Sunny

    • 35
    • 55

    Mostly Cloudy

    • 33
    • 56

    Mostly Cloudy

    • 35
    • 57

    Mostly Cloudy

    • 35
    • 57

    Mostly Cloudy

Today 31 Oct Lower Columbia Basin of Washington

Partly sunny. Patchy fog in the morning. Highs in the lower to mid 50s. Light Wind, becoming north 5 to 10 Mph in the afternoon.

Tonight 31 Oct Lower Columbia Basin of Washington

Mostly cloudy. Lows in the mid to upper 30s. Light wind.

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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

    53.7 °F

  • Highest 5 October, 2026

    84.7 °F

Climate (2021–2026)

Tri-Cities Airport (0 miles)

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  • Average Low 2021–2026

    42.7 °F

  • Average 2021–2026

    55.3 °F

  • Average High 2021–2026

    68 °F
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