Hat Rock State Park Weather Forecast

    • 39
    • 69

    Mostly Sunny

    • 42
    • 69

    Mostly Sunny

    • 45
    • 72

    Mostly Sunny

    • 49
    • 73

    Partly Sunny

    • 46
    • 69

    Chance Rain

    • 44
    • 64

    Slight Chance Rain

Today 7 Apr Lower Columbia Basin of Oregon

Sunny. Highs in the mid to upper 60s. Windy. West wind 20 to 30 Mph.

Tonight 7 Apr Lower Columbia Basin of Oregon

Mostly clear. Lows around 40. Southwest wind 5 to 15 Mph. Gusts up to 30 Mph in the evening.

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Hat Rock State Park Temperature Statistics

April Temperature

Hermiston, Hermiston Municipal Airport (7.5 miles)

  • Lowest 4 April, 2026

    30.9 °F

  • Average April

    51.1 °F

  • Highest 5 April, 2026

    71.1 °F

Climate (2021–Present)

Hermiston, Hermiston Municipal Airport (7.5 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    55.4 °F

  • Average High 2021–2026

    67.7 °F
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