Hat Rock State Park Weather Forecast

    • 40
    • 55

    Chance Rain

    • 41
    • 56

    Rain

    • 35
    • 49

    Rain Likely

    • 34
    • 49

    Partly Sunny

    • 35
    • 46

    Rain Likely

    • 33
    • 50

    Chance Rain

    • 32
    • 46

    Chance Rain

Today 17 Dec Lower Columbia Basin of Oregon

Mostly sunny. A 20 percent chance of rain in the morning. Highs in the lower 50s. Very windy. West wind 25 to 40 Mph. Gusts up to 55 Mph decreasing to 45 Mph in the afternoon.

Tonight 17 Dec Lower Columbia Basin of Oregon

Mostly cloudy. A 20 percent chance of rain overnight. Lows in the upper 30s. Windy. Southwest wind 15 to 25 Mph shifting to the south 5 to 15 Mph overnight.

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Hat Rock State Park Temperature Statistics

December Temperature

Hermiston, Hermiston Municipal Airport (7.5 miles)

  • Lowest 1 December, 2025

    25 °F

  • Average December

    46.3 °F

  • Highest 15 December, 2025

    72 °F

Climate (2020–Present)

Hermiston, Hermiston Municipal Airport (7.5 miles)

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  • Average Low 2020–2025

    43 °F

  • Average 2020–2025

    55.4 °F

  • Average High 2020–2025

    67.7 °F
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