Grand Coulee Dam Airport Weather Forecast

    • 36
    • 54

    Gradual Clearing

    • 43
    • 52

    Chance Rain

    • 36
    • 56

    Chance Rain

    • 36
    • 54

    Partly Sunny

    • 39
    • 52

    Chance Rain

    • 41
    • 54

    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.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Coulee Dam Airport Temperature Statistics

October Temperature

Omak Airport (42.3 miles)

  • Lowest 16 October, 2025

    28 °F

  • Average October

    49.4 °F

  • Highest 7 October, 2025

    73 °F

Climate (2020–Present)

Omak Airport (42.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    40.7 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    62.7 °F
Get WillyWeather+ to remove ads