Coulee City Weather Forecast

    • 38
    • 51

    Decreasing Clouds

    • 43
    • 48

    Chance Rain

    • 38
    • 53

    Chance Rain

    • 38
    • 51

    Partly Sunny

    • 40
    • 48

    Slight Chance Rain

    • 42
    • 49

    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 Temperature Statistics

October Temperature

Ephrata, Ephrata Municipal Airport (23 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 (23 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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