Coulee Dam Weather Forecast

    • 62
    • 86

    Chance Rain Showers

    • 65
    • 93

    Mostly Sunny

    • 62
    • 95

    Sunny

    • 61
    • 93

    Mostly Sunny

    • 62
    • 90

    Mostly Sunny

    • 63
    • 90

    Mostly Sunny

Today 22 Jul Upper Columbia Basin

Partly cloudy. A chance of rain Showers in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the lower to mid 80s. Southwest wind 5 to 10 Mph. Chance of precipitation 50 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 22 Jul Upper Columbia Basin

Mostly clear. A chance of rain Showers in the evening. Lows in the mid 50s to lower 60s. North wind 5 to 10 Mph. Chance of precipitation 20 percent.

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Coulee Dam Temperature Statistics

July Temperature

Omak Airport (42.3 miles)

  • Lowest 11 July, 2025

    52.6 °F

  • Average July

    76.4 °F

  • Highest 13 July, 2025

    103.6 °F

Climate (2020–Present)

Omak Airport (42.3 miles)

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  • Average Low 2020–2025

    40.6 °F

  • Average 2020–2025

    51.7 °F

  • Average High 2020–2025

    62.7 °F
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