Columbia Ag Airport Weather Forecast

    • 51
    • 71

    Chance Rain Showers

    • 46
    • 69

    Chance Rain Showers

    • 48
    • 74

    Mostly Sunny

    • 52
    • 80

    Mostly Sunny

    • 58
    • 89

    Mostly Sunny

    • 55
    • 88

    Partly Sunny

Today 21 May Lower Columbia Basin of Washington

Sunny. Highs in the upper 60s to lower 70s. South wind 5 to 10 Mph.

Tonight 21 May Lower Columbia Basin of Washington

Mostly cloudy. A 50 percent chance of rain Showers overnight. Lows in the upper 40s to lower 50s. Northeast wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Columbia Ag Airport Temperature Statistics

May Temperature

Tri-Cities Airport (6.2 miles)

  • Lowest 4 May, 2025

    34.6 °F

  • Average May

    58.9 °F

  • Highest 2 May, 2025

    86.6 °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

    67.8 °F
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