Tri-Cities Airport Weather Forecast

    • 44
    • 62

    Slight Chance Rain

    • 39
    • 59

    Mostly Cloudy

    • 36
    • 52

    Partly Sunny

    • 41
    • 55

    Mostly Cloudy

    • 43
    • 59

    Chance Rain

    • 40
    • 56

    Rain Likely

Today 11 Dec Lower Columbia Basin of Washington

Mostly cloudy with a 20 percent chance of rain. Highs in the upper 50s to lower 60s. Windy. Southwest wind 15 to 25 Mph. Gusts up to 45 Mph decreasing to 25 Mph in the afternoon.

Tonight 11 Dec Lower Columbia Basin of Washington

Mostly cloudy. A 20 percent chance of rain in the evening. Lows in the 40s. Southwest wind 5 to 10 Mph. Gusts up to 20 Mph in the evening.

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Tri-Cities Airport Temperature Statistics

December Temperature

Tri-Cities Airport (0 miles)

  • Lowest 1 December, 2025

    24.1 °F

  • Average December

    44.2 °F

  • Highest 8 December, 2025

    63 °F

Climate (2020–Present)

Tri-Cities Airport (0 miles)

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  • Average Low 2020–2025

    43 °F

  • Average 2020–2025

    55.6 °F

  • Average High 2020–2025

    68 °F
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