La Grande Reservoir Weather Forecast

    • 17
    • 23

    Chance Snow

    • 19
    • 28

    Increasing Clouds

    • 23
    • 32

    Partly Sunny

    • 25
    • 35

    Partly Sunny

    • 26
    • 37

    Partly Sunny

    • 27
    • 35

    Snow Likely

    • 23
    • 35

    Snow Likely

Today 27 Dec Southern Blue Mountains of Oregon

Mostly cloudy. A chance of snow. Highs in the mid 20s to lower 30s. Breezy. Northwest wind 10 to 20 Mph with Gusts to around 40 Mph. Chance of precipitation 50 percent.

Tonight 27 Dec Southern Blue Mountains of Oregon

Mostly cloudy. Lows 16 to 24. Gusts up to 20 Mph in the evening.

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La Grande Reservoir Temperature Statistics

December Temperature

La Grande/Union County Airport (13.7 miles)

  • Lowest 1 December, 2025

    23 °F

  • Average December

    41.8 °F

  • Highest 11 December, 2025

    57.9 °F

Climate (2020–Present)

La Grande/Union County Airport (13.7 miles)

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  • Average Low 2020–2025

    38.2 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    62.5 °F
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