Grand Coulee Weather Forecast

    • 63
    • 89

    Increasing Clouds

    • 58
    • 85

    Slight Chance Rain Showers

    • 57
    • 88

    Mostly Sunny

    • 49
    • 86

    Sunny

    • 49
    • 81

    Sunny

    • 53
    • 84

    Mostly Sunny

Today 8 Jun Upper Columbia Basin

Sunny. Highs in the mid to upper 80s. North wind 5 to 10 Mph.

Tonight 8 Jun Upper Columbia Basin

Mostly cloudy. Lows in the mid 50s to lower 60s. North wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Coulee Temperature Statistics

June Temperature

Omak Airport (42.9 miles)

  • Lowest 5 June, 2024

    41 °F

  • Average June

    62.6 °F

  • Highest 6 June, 2024

    84 °F

Climate (2019–Present)

Omak Airport (42.9 miles)

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  • Average Low 2019–2024

    40.7 °F

  • Average 2019–2024

    51.4 °F

  • Average High 2019–2024

    62 °F
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