Coulee City Airport Weather Forecast

    • 33
    • 53

    Decreasing Clouds

    • 41
    • 50

    Chance Rain

    • 33
    • 55

    Chance Rain

    • 33
    • 53

    Partly Sunny

    • 36
    • 50

    Mostly Cloudy

    • 38
    • 52

    Chance Rain

Today 30 Oct Upper Columbia Basin

Mostly sunny. Highs in the lower to mid 50s. Northeast wind 5 to 10 Mph.

Tonight 30 Oct Upper Columbia Basin

Mostly cloudy in the evening then clearing. Patchy fog overnight. Lows in the lower to mid 30s. Northeast wind 5 to 10 Mph.

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Coulee City Airport Temperature Statistics

October Temperature

Ephrata, Ephrata Municipal Airport (24.9 miles)

  • Lowest 28 October, 2025

    30.9 °F

  • Average October

    50.9 °F

  • Highest 9 October, 2025

    75 °F

Climate (2020–Present)

Ephrata, Ephrata Municipal Airport (24.9 miles)

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  • Average Low 2020–2025

    42.2 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    63.7 °F
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