La Grande/Union County Airport Weather Forecast

    • 44
    • 86

    Partly Sunny

    • 37
    • 76

    Mostly Sunny

    • 41
    • 79

    Mostly Sunny

    • 46
    • 90

    Mostly Sunny

    • 43
    • 87

    Partly Sunny

    • 43
    • 79

    Chance Rain Showers

    • 40
    • 74

    Chance Rain Showers

Today 28 Aug Grande Ronde Valley

Sunny. Highs in the mid 80s. Northwest wind 5 to 10 Mph.

Tonight 28 Aug Grande Ronde Valley

Partly cloudy. Lows in the 40s. Northwest wind 5 to 15 Mph.

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La Grande/Union County Airport Temperature Statistics

August Temperature

La Grande/Union County Airport (0 miles)

  • Lowest 24 August, 2026

    41 °F

  • Average August

    71.6 °F

  • Highest 21 August, 2026

    102 °F

Climate (2021–2026)

La Grande/Union County Airport (0 miles)

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  • Average Low 2021–2026

    38.3 °F

  • Average 2021–2026

    50.6 °F

  • Average High 2021–2026

    62.8 °F
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