Kennewick Weather Forecast

    • 47
    • 72

    Increasing Clouds

    • 48
    • 71

    Mostly Sunny

    • 51
    • 78

    Mostly Sunny

    • 53
    • 74

    Chance Rain Showers

    • 49
    • 72

    Chance Rain Showers

    • 51
    • 72

    Slight Chance Rain Showers

Today 18 May Lower Columbia Basin of Washington

Sunny. Highs in the upper 60s to lower 70s. Southwest wind 5 to 15 Mph. Gusts up to 20 Mph increasing to 30 Mph in the afternoon.

Tonight 18 May Lower Columbia Basin of Washington

Partly cloudy. A 20 percent chance of rain Showers in the evening. Lows in the upper 30s to mid 40s. Breezy. West wind 10 to 20 Mph with Gusts to around 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Kennewick Temperature Statistics

May Temperature

Tri-Cities Airport (3.7 miles)

  • Lowest 1 May, 2024

    32.6 °F

  • Average May

    61.5 °F

  • Highest 11 May, 2024

    92.6 °F

Climate (2019–Present)

Tri-Cities Airport (3.7 miles)

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  • Average Low 2019–2024

    43.1 °F

  • Average 2019–2024

    55.6 °F

  • Average High 2019–2024

    67.5 °F
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