Tri-Cities Airport Weather Forecast

    • 54
    • 86

    Mostly Sunny

    • 45
    • 86

    Rain Showers Likely

    • 45
    • 69

    Mostly Cloudy

    • 49
    • 77

    Partly Sunny

    • 52
    • 84

    Chance Rain Showers

    • 46
    • 78

    Partly Sunny

Today 24 May Lower Columbia Basin of Washington

Sunny. Highs in the 80s. Southwest wind 5 to 15 Mph with Gusts to around 25 Mph.

Tonight 24 May Lower Columbia Basin of Washington

Mostly clear. Lows in the lower to mid 50s. Southwest wind 5 to 15 Mph with Gusts to around 25 Mph.

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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

    63.7 °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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