Tri-Cities Airport Weather Forecast

    • 69
    • 97

    Hot

    • 65
    • 100

    Hot

    • 55
    • 94

    Mostly Sunny

    • 52
    • 85

    Sunny

    • 55
    • 90

    Mostly Sunny

    • 58
    • 93

    Mostly Sunny

    • 55
    • 91

    Mostly Sunny

Today 20 Aug Lower Columbia Basin of Washington

Sunny. Highs in the mid to upper 90s. Light wind.

Tonight 20 Aug Lower Columbia Basin of Washington

Partly cloudy. Lows in the 60s. Light wind.

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Tri-Cities Airport Temperature Statistics

August Temperature

Tri-Cities Airport (0 miles)

  • Lowest 5 August, 2026

    47.6 °F

  • Average August

    74.5 °F

  • Highest 7 August, 2026

    102.7 °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

    67.9 °F
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