Hat Rock State Park Weather Forecast

    • 54
    • 80

    Becoming Sunny

    • 57
    • 86

    Mostly Sunny

    • 54
    • 85

    Mostly Sunny

    • 52
    • 76

    Partly Sunny

    • 51
    • 72

    Chance Rain Showers

    • 50
    • 72

    Mostly Sunny

    • 51
    • 76

    Mostly Sunny

Today 8 Sep Lower Columbia Basin of Oregon

Sunny. Highs in the upper 70s. Light wind.

Tonight 8 Sep Lower Columbia Basin of Oregon

Clear. Lows in the lower 50s. Light wind.

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Hat Rock State Park Temperature Statistics

September Temperature

Hermiston, Hermiston Municipal Airport (7.5 miles)

  • Lowest 4 September, 2026

    42.7 °F

  • Average September

    63.5 °F

  • Highest 1 September, 2026

    86.6 °F

Climate (2021–2026)

Hermiston, Hermiston Municipal Airport (7.5 miles)

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  • Average Low 2021–2026

    42.8 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    67.5 °F
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