Tri-Cities Airport Weather Forecast

    • 37
    • 68

    Mostly Sunny

    • 37
    • 69

    Decreasing Clouds

    • 36
    • 65

    Chance Rain Showers

    • 30
    • 65

    Mostly Sunny

    • 31
    • 60

    Slight Chance Rain Showers

    • 30
    • 61

    Slight Chance Rain Showers

    • 29
    • 60

    Partly Sunny

Today 20 Oct Lower Columbia Basin of Washington

Mostly sunny. Highs in the mid to upper 50s.

Tonight 20 Oct Lower Columbia Basin of Washington

Mostly clear. Lows in the mid 30s to lower 40s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tri-Cities Airport Temperature Statistics

October Temperature

Tri-Cities Airport (0 miles)

  • Lowest 13 October, 2026

    29.6 °F

  • Average October

    56.8 °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

    55.4 °F

  • Average High 2021–2026

    68 °F
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