Hat Rock State Park Weather Forecast

    • 57
    • 89

    Sunny

    • 57
    • 91

    Sunny

    • 60
    • 97

    Sunny

    • 66
    • 98

    Hot

    • 67
    • 99

    Hot

    • 67
    • 101

    Hot

Today 20 Aug Lower Columbia Basin of Oregon

Sunny. Highs in the mid to upper 80s. West wind 5 to 15 Mph.

Tonight 20 Aug Lower Columbia Basin of Oregon

Clear. Lows in the mid to upper 50s. Southwest wind 5 to 15 Mph.

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Hat Rock State Park Temperature Statistics

August Temperature

Hermiston, Hermiston Municipal Airport (7.5 miles)

  • Lowest 8 August, 2025

    48.7 °F

  • Average August

    76.6 °F

  • Highest 11 August, 2025

    102.7 °F

Climate (2020–Present)

Hermiston, Hermiston Municipal Airport (7.5 miles)

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  • Average Low 2020–2025

    42.8 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    67.5 °F
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