Hermiston Weather Forecast

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    Rain

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    • 56

    Rain

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    Chance Rain

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    • 58

    Chance Rain

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    Chance Rain

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    Chance Rain

Today 4 Dec Lower Columbia Basin of Oregon

Rain likely in the Morning, then rain in the afternoon. Highs in the lower to mid 40s. Southwest wind 5 to 10 Mph. Chance of precipitation 90 percent. Rainfall Amounts between a tenth and a quarter of an inch possible.

Tonight 4 Dec Lower Columbia Basin of Oregon

Cloudy. A chance of rain in the Evening, then rain likely overnight. Lows in the upper 30s to lower 40s. Southwest wind 5 to 10 Mph. Chance of precipitation 70 percent. Rainfall Amounts less than a tenth of an inch.

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Hermiston Temperature Statistics

December Temperature

Hermiston, Hermiston Municipal Airport (1.2 miles)

  • Lowest 1 December, 2025

    25 °F

  • Average December

    31.2 °F

  • Highest 2 December, 2025

    39.9 °F

Climate (2020–Present)

Hermiston, Hermiston Municipal Airport (1.2 miles)

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  • Average Low 2020–2025

    43 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    67.6 °F
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