Hat Rock State Park Weather Forecast

    • 61
    • 91

    Mostly Sunny

    • 58
    • 88

    Smoke

    • 59
    • 87

    Mostly Sunny

    • 60
    • 90

    Mostly Sunny

    • 61
    • 91

    Partly Sunny

    • 63
    • 92

    Mostly Cloudy

    • 61
    • 90

    Mostly Cloudy

Today 11 Aug Lower Columbia Basin of Oregon

Sunny. Highs around 90. West wind 5 to 15 Mph with Gusts to around 25 Mph.

Tonight 11 Aug Lower Columbia Basin of Oregon

Mostly clear. Lows around 60. West wind 5 to 15 Mph with Gusts to around 30 Mph.

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Hat Rock State Park Temperature Statistics

August Temperature

Hermiston, Hermiston Municipal Airport (7.5 miles)

  • Lowest 4 August, 2026

    45.6 °F

  • Average August

    72.5 °F

  • Highest 7 August, 2026

    100.7 °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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