La Grande/Union County Airport Weather Forecast

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    • 49

    Rain

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    • 54

    Rain/Snow

    • 30
    • 47

    Rain/Snow Likely

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    • 44

    Rain/Snow

    • 27
    • 46

    Rain/Snow Likely

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    Chance Rain/Snow

Today 15 Dec Grande Ronde Valley

Rain likely in the Morning, then rain in the afternoon. Highs around 50. Windy. South wind 15 to 25 Mph with Gusts to around 35 Mph. Chance of precipitation 90 percent. Rainfall Amounts less than a quarter of an inch.

Tonight 15 Dec Grande Ronde Valley

Mostly cloudy. Rain likely in the Evening, then a chance of rain overnight. Lows in the upper 30s. Windy. South wind 15 to 25 Mph with Gusts to around 35 Mph decreasing to 5 to 15 Mph with Gusts to around 25 Mph overnight. Chance of precipitation 70 percent. Rainfall Amounts less than a tenth of an inch.

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La Grande/Union County Airport Temperature Statistics

December Temperature

La Grande/Union County Airport (0 miles)

  • Lowest 1 December, 2025

    23 °F

  • Average December

    41.3 °F

  • Highest 11 December, 2025

    57.9 °F

Climate (2020–Present)

La Grande/Union County Airport (0 miles)

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  • Average Low 2020–2025

    38.1 °F

  • Average 2020–2025

    50.4 °F

  • Average High 2020–2025

    62.5 °F
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