La Grande Reservoir Weather Forecast

    • 55
    • 86

    Patchy Smoke

    • 58
    • 89

    Patchy Smoke

    • 57
    • 90

    Mostly Cloudy

    • 46
    • 82

    Chance Rain Showers

    • 47
    • 77

    Mostly Sunny

    • 51
    • 83

    Partly Sunny

Today 19 Aug Southern Blue Mountains of Oregon

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

Tonight 19 Aug Southern Blue Mountains of Oregon

Mostly clear. Patchy smoke overnight. Lows in the mid 50s to lower 60s.

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La Grande Reservoir Temperature Statistics

August Temperature

La Grande/Union County Airport (13.7 miles)

  • Lowest 5 August, 2026

    43 °F

  • Average August

    70.6 °F

  • Highest 7 August, 2026

    99 °F

Climate (2021–2026)

La Grande/Union County Airport (13.7 miles)

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  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    62.7 °F
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