Tri-Cities Airport Weather Forecast

    • 46
    • 74

    Mostly Cloudy

    • 44
    • 73

    Partly Sunny

    • 47
    • 77

    Partly Sunny

    • 53
    • 81

    Partly Sunny

    • 57
    • 85

    Mostly Sunny

    • 55
    • 86

    Partly Sunny

Today 29 May Lower Columbia Basin of Washington

Partly cloudy with a 20 percent chance of rain Showers. Highs in the lower to mid 70s. Windy. Southwest wind 15 to 25 Mph with Gusts to around 35 Mph.

Tonight 29 May Lower Columbia Basin of Washington

Mostly cloudy. Lows in the mid to upper 40s. Windy. West wind 15 to 25 Mph. Gusts up to 35 Mph decreasing to 25 Mph overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tri-Cities Airport Temperature Statistics

May Temperature

Tri-Cities Airport (0 miles)

  • Lowest 18 May, 2026

    37.7 °F

  • Average May

    64.1 °F

  • Highest 2 May, 2026

    90.6 °F

Climate (2021–Present)

Tri-Cities Airport (0 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    55.6 °F

  • Average High 2021–2026

    68.1 °F
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