Lostine Reservoir Weather Forecast

    • 51
    • 81

    Mostly Sunny

    • 51
    • 80

    Sunny

    • 53
    • 83

    Sunny

    • 55
    • 87

    Partly Sunny

    • 56
    • 84

    Partly Sunny

    • 57
    • 84

    Partly Sunny

Today 8 Jul Wallowa County

Sunny. Highs in the lower 70s to lower 80s, except in the 80s Valleys. Gusts up to 20 Mph in the afternoon.

Tonight 8 Jul Wallowa County

Mostly clear. Lows in the upper 40s to mid 50s. Northwest wind 5 to 15 Mph in the Evening, becoming light.

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Lostine Reservoir Temperature Statistics

July Temperature

La Grande/Union County Airport (29.8 miles)

  • Lowest 2 July, 2026

    48 °F

  • Average July

    66.6 °F

  • Highest 4 July, 2026

    88 °F

Climate (2021–2026)

La Grande/Union County Airport (29.8 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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