Columbia Ag Airport Weather Forecast

    • 57
    • 83

    Mostly Sunny

    • 61
    • 86

    Increasing Clouds

    • 53
    • 73

    Chance Rain Showers

    • 51
    • 73

    Mostly Sunny

    • 54
    • 81

    Sunny

    • 52
    • 82

    Mostly Sunny

    • 50
    • 74

    Partly Sunny

Today 12 Sep Lower Columbia Basin of Washington

Sunny. Haze in the afternoon. Highs in the lower to mid 80s. South wind 5 to 10 Mph.

Tonight 12 Sep Lower Columbia Basin of Washington

Mostly clear. Lows in the mid to upper 50s. South wind 5 to 10 Mph in the Evening, becoming light.

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Columbia Ag Airport Temperature Statistics

September Temperature

Tri-Cities Airport (6.2 miles)

  • Lowest 5 September, 2025

    57 °F

  • Average September

    75.3 °F

  • Highest 2 September, 2025

    99 °F

Climate (2020–Present)

Tri-Cities Airport (6.2 miles)

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  • Average Low 2020–2025

    42.9 °F

  • Average 2020–2025

    55.5 °F

  • Average High 2020–2025

    67.9 °F
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