McNary Beach Recreation Area Weather Forecast

    • 48
    • 74

    Increasing Clouds

    • 51
    • 72

    Chance Rain Showers

    • 48
    • 77

    Mostly Sunny

    • 52
    • 81

    Mostly Sunny

    • 55
    • 86

    Mostly Sunny

    • 56
    • 88

    Partly Sunny

Today 5 Sep Lower Columbia Basin of Oregon

Mostly cloudy in the Morning, becoming partly cloudy. A 20 percent chance of rain Showers. Highs in the lower 70s. Light wind.

Tonight 5 Sep Lower Columbia Basin of Oregon

Mostly cloudy. Lows in the upper 40s to lower 50s. Northeast wind 5 to 10 Mph in the Evening, becoming light.

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McNary Beach Recreation Area Temperature Statistics

September Temperature

Hermiston, Hermiston Municipal Airport (6.8 miles)

  • Lowest 3 September, 2026

    52 °F

  • Average September

    65.8 °F

  • Highest 1 September, 2026

    86.6 °F

Climate (2021–2026)

Hermiston, Hermiston Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    42.8 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    67.6 °F
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