Tri-Cities Airport Weather Forecast

    • 56
    • 91

    Increasing Clouds

    • 47
    • 71

    Rain Showers Likely

    • 47
    • 74

    Mostly Sunny

    • 45
    • 72

    Partly Sunny

    • 43
    • 67

    Partly Sunny

    • 47
    • 70

    Mostly Sunny

Today 12 May Lower Columbia Basin of Washington

Partly cloudy. Highs in the upper 80s to lower 90s. North wind 5 to 10 Mph.

Tonight 12 May Lower Columbia Basin of Washington

Partly cloudy. Lows in the lower to mid 50s. Northwest wind 5 to 15 Mph. Gusts up to 35 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 1 May, 2026

    38.6 °F

  • Average May

    66.7 °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

    55.7 °F

  • Average High 2021–2026

    68.1 °F
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