Irrigon Weather Forecast

    • 68
    • 101

    Hot

    • 65
    • 98

    Hot

    • 67
    • 96

    Partly Sunny

    • 64
    • 89

    Slight Chance Thunderstorms

    • 61
    • 87

    Partly Sunny

    • 59
    • 82

    Chance Rain Showers

Today 3 Sep Lower Columbia Basin of Oregon

Hot. Partly cloudy in the morning then clearing. Haze in the afternoon. Highs 98 to 101. West wind 5 to 10 Mph.

Tonight 3 Sep Lower Columbia Basin of Oregon

Partly cloudy. Haze in the evening. Lows in the upper 60s to lower 70s. Southwest wind 5 to 10 Mph.

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Irrigon Temperature Statistics

September Temperature

Hermiston, Hermiston Municipal Airport (11.8 miles)

  • Lowest 1 September, 2025

    60.1 °F

  • Average September

    77.1 °F

  • Highest 1 September, 2025

    93.9 °F

Climate (2020–Present)

Hermiston, Hermiston Municipal Airport (11.8 miles)

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  • Average Low 2020–2025

    42.9 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    67.5 °F
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