La Grande Reservoir Weather Forecast

    • 49
    • 87

    Patchy Smoke

    • 44
    • 80

    Patchy Smoke

    • 43
    • 76

    Partly Sunny

    • 36
    • 68

    Mostly Sunny

    • 43
    • 69

    Mostly Sunny

    • 45
    • 78

    Partly Sunny

    • 43
    • 74

    Partly Sunny

Today 26 Aug Southern Blue Mountains of Oregon

Partly cloudy. Patchy smoke. Highs in the mid 80s to lower 90s.

Tonight 26 Aug Southern Blue Mountains of Oregon

Mostly cloudy. Patchy smoke through the night. Lows in the 50s. Gusts up to 20 Mph in the evening.

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La Grande Reservoir Temperature Statistics

August Temperature

La Grande/Union County Airport (13.7 miles)

  • Lowest 24 August, 2026

    41 °F

  • Average August

    71.4 °F

  • Highest 21 August, 2026

    102 °F

Climate (2021–2026)

La Grande/Union County Airport (13.7 miles)

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  • Average Low 2021–2026

    38.3 °F

  • Average 2021–2026

    50.6 °F

  • Average High 2021–2026

    62.7 °F
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