Tri-Cities Airport Weather Forecast

    • 43
    • 72

    Rain Showers

    • 41
    • 69

    Partly Sunny

    • 41
    • 71

    Partly Sunny

    • 45
    • 72

    Partly Sunny

    • 46
    • 74

    Partly Sunny

    • 45
    • 73

    Partly Sunny

Today 25 Sep Lower Columbia Basin of Washington

Cloudy with rain Showers likely in the Morning, then partly cloudy in the afternoon. Patchy blowing dust in the afternoon. Highs in the upper 60s to lower 70s. Windy. South wind 5 to 15 Mph with Gusts to around 30 Mph increasing to southwest 20 to 30 Mph with Gusts to around 45 Mph in the afternoon. Chance of precipitation 70 percent. Rainfall Amounts less than a tenth of an inch.

Tonight 25 Sep Lower Columbia Basin of Washington

Mostly clear. Patchy blowing dust in the evening. Lows in the lower to mid 40s. Windy. Southwest wind 15 to 25 Mph. Gusts up to 45 Mph decreasing to 30 Mph overnight.

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Tri-Cities Airport Temperature Statistics

September Temperature

Tri-Cities Airport (0 miles)

  • Lowest 8 September, 2026

    44.7 °F

  • Average September

    65.2 °F

  • Highest 10 September, 2026

    90.6 °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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