Hat Rock State Park Weather Forecast

    • 61
    • 93

    Mostly Sunny

    • 61
    • 92

    Mostly Sunny

    • 65
    • 95

    Partly Sunny

    • 63
    • 92

    Chance Rain Showers

    • 56
    • 87

    Mostly Sunny

    • 58
    • 86

    Mostly Sunny

    • 62
    • 90

    Mostly Sunny

Today 18 Aug Lower Columbia Basin of Oregon

Sunny. Highs in the lower 90s. Breezy. West wind 10 to 20 Mph with Gusts to around 30 Mph.

Tonight 18 Aug Lower Columbia Basin of Oregon

Mostly clear. Lows in the lower 60s. Southwest 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

    73.9 °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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