Tri-Cities Airport Weather Forecast

    • 45
    • 78

    Increasing Clouds

    • 46
    • 78

    Mostly Sunny

    • 51
    • 87

    Mostly Sunny

    • 50
    • 87

    Partly Sunny

    • 48
    • 78

    Chance Rain Showers

    • 45
    • 76

    Slight Chance Rain Showers

Today 29 Aug Lower Columbia Basin of Washington

Sunny. Highs in the mid to upper 70s. Southwest wind 5 to 15 Mph with Gusts to around 30 Mph.

Tonight 29 Aug Lower Columbia Basin of Washington

Mostly clear. Lows in the lower to mid 50s. Southwest wind 5 to 15 Mph with Gusts to around 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tri-Cities Airport Temperature Statistics

August Temperature

Tri-Cities Airport (0 miles)

  • Lowest 5 August, 2026

    47.6 °F

  • Average August

    75.4 °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

    68 °F
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