La Grande Reservoir Weather Forecast

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    • 33

    Rain/Snow

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    • 38

    Rain/Snow

    • 28
    • 34

    Snow

    • 32
    • 36

    Rain/Snow Likely

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    • 39

    Rain Likely

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    • 41

    Rain/Snow Likely

Today 4 Dec Southern Blue Mountains of Oregon

Cloudy. Rain and mountain snow likely in the Morning, then rain and mountain snow in the afternoon. Mountain snow accumulation up to 1 inch. Snow level 4000 feet in the morning. Highs in the mid 30s to lower 40s. Chance of precipitation 90 percent.

Tonight 4 Dec Southern Blue Mountains of Oregon

Patchy fog in the evening. Rain and high mountain snow. High mountain snow may be heavy at Times overnight. High mountain snow accumulation up to 1 inch. Lows in the 30s. Gusts up to 20 Mph overnight. Chance of precipitation near 100 percent.

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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

    32.6 °F

  • Highest 2 December, 2025

    39.9 °F

Climate (2020–Present)

La Grande/Union County Airport (13.7 miles)

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  • Average Low 2020–2025

    38.1 °F

  • Average 2020–2025

    50.4 °F

  • Average High 2020–2025

    62.4 °F
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