Tri-Cities Airport Weather Forecast

    • 47
    • 77

    Rain Showers Likely

    • 44
    • 73

    Partly Sunny

    • 44
    • 72

    Chance Rain Showers

    • 45
    • 75

    Partly Sunny

    • 48
    • 79

    Chance Rain Showers

    • 48
    • 76

    Chance Rain Showers

Today 2 Sep Lower Columbia Basin of Washington

Mostly cloudy. A chance of Showers and Thunderstorms in the Morning, then a chance of rain Showers in the afternoon. Highs in the mid to upper 70s. South wind 5 to 15 Mph with Gusts to around 30 Mph. Chance of precipitation 50 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 2 Sep Lower Columbia Basin of Washington

Mostly cloudy. Rain Showers likely in the Evening, then a chance of rain Showers overnight. Lows in the upper 40s to lower 50s. Southwest wind 5 to 15 Mph. Gusts up to 30 Mph in the evening. Chance of precipitation 70 percent. Rainfall Amounts less than a tenth of an inch.

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Tri-Cities Airport Temperature Statistics

September Temperature

Tri-Cities Airport (0 miles)

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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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