Lostine Reservoir Weather Forecast

    • 54
    • 90

    Patchy Smoke

    • 49
    • 84

    Patchy Smoke

    • 47
    • 79

    Chance Rain Showers

    • 42
    • 71

    Mostly Sunny

    • 46
    • 74

    Mostly Sunny

    • 48
    • 80

    Partly Sunny

Today 26 Aug Wallowa County

Partly cloudy. Highs in the upper 70s to upper 80s, except in the lower to mid 90s Valleys. South wind 5 to 15 Mph in the afternoon. Gusts up to 30 Mph.

Tonight 26 Aug Wallowa County

Mostly cloudy. Patchy smoke through the night. Lows in the lower 50s to lower 60s. Gusts up to 30 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lostine Reservoir Temperature Statistics

August Temperature

La Grande/Union County Airport (29.8 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 (29.8 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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