McCormack Slough Weather Forecast

    • 58
    • 82

    Sunny

    • 56
    • 85

    Sunny

    • 60
    • 89

    Sunny

    • 66
    • 91

    Mostly Sunny

    • 66
    • 93

    Mostly Sunny

    • 67
    • 94

    Mostly Sunny

Today 20 Aug Lower Columbia Basin of Oregon

Sunny. Highs in the mid to upper 80s. West wind 5 to 15 Mph.

Tonight 20 Aug Lower Columbia Basin of Oregon

Mostly clear. Lows in the mid to upper 50s. Southwest wind 5 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

McCormack Slough Temperature Statistics

August Temperature

Hermiston, Hermiston Municipal Airport (16.2 miles)

  • Lowest 8 August, 2025

    48.7 °F

  • Average August

    76.6 °F

  • Highest 11 August, 2025

    102.7 °F

Climate (2020–Present)

Hermiston, Hermiston Municipal Airport (16.2 miles)

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

  • Average Low 2020–2025

    42.8 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    67.5 °F
Get WillyWeather+ to remove ads