McCormack Slough Weather Forecast

    • 41
    • 59

    Chance Rain Showers

    • 38
    • 58

    Mostly Sunny

    • 43
    • 61

    Rain Likely

    • 41
    • 58

    Rain Likely

    • 40
    • 57

    Partly Sunny

    • 42
    • 55

    Chance Rain

Today 28 Mar Lower Columbia Basin of Oregon

Mostly cloudy with a 50 percent chance of rain Showers. Highs in the upper 50s to lower 60s. Breezy. Southwest wind 10 to 20 Mph. Gusts up to 30 Mph in the afternoon. Rainfall Amounts less than a tenth of an inch.

Tonight 28 Mar Lower Columbia Basin of Oregon

Partly cloudy. A 20 percent chance of rain Showers in the evening. Lows in the upper 30s. Breezy. Southwest wind 10 to 20 Mph. Gusts up to 30 Mph in the evening.

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McCormack Slough Temperature Statistics

March Temperature

Hermiston, Hermiston Municipal Airport (16.2 miles)

  • Lowest 7 March, 2025

    25.8 °F

  • Average March

    48.8 °F

  • Highest 25 March, 2025

    78.1 °F

Climate (2020–Present)

Hermiston, Hermiston Municipal Airport (16.2 miles)

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  • Average Low 2020–2025

    42.9 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    67.3 °F
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