Hat Rock State Park Weather Forecast

    • 52
    • 79

    Mostly Sunny

    • 54
    • 77

    Chance Rain Showers

    • 53
    • 80

    Mostly Sunny

    • 54
    • 82

    Mostly Sunny

    • 55
    • 84

    Mostly Sunny

    • 54
    • 82

    Mostly Sunny

Today 16 Sep Lower Columbia Basin of Oregon

Sunny. Highs in the mid to upper 70s. Light Wind, becoming northeast 5 to 15 Mph with Gusts to around 25 Mph in the afternoon.

Tonight 16 Sep Lower Columbia Basin of Oregon

Clear. Lows in the lower 50s. North wind 5 to 10 Mph with Gusts to around 25 Mph in the Evening, becoming light.

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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

    63.8 °F

  • Highest 10 September, 2026

    90.6 °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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