Wallowa Lake Weather Forecast

    • 48
    • 69

    Mostly Sunny

    • 51
    • 74

    Mostly Sunny

    • 52
    • 76

    Partly Sunny

    • 51
    • 75

    Partly Sunny

    • 48
    • 72

    Partly Sunny

    • 48
    • 73

    Partly Sunny

    • 44
    • 68

    Mostly Cloudy

Today 19 Sep Wallowa County

Sunny. Highs in the 60s, except in the 70s Valleys.

Tonight 19 Sep Wallowa County

Mostly clear. Lows in the lower 40s to lower 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Wallowa Lake Temperature Statistics

September Temperature

La Grande/Union County Airport (38.5 miles)

  • Lowest 15 September, 2026

    36 °F

  • Average September

    58.4 °F

  • Highest 10 September, 2026

    89.1 °F

Climate (2021–2026)

La Grande/Union County Airport (38.5 miles)

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  • Average Low 2021–2026

    38.3 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    62.7 °F
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