Lostine Reservoir Weather Forecast

    • 19
    • 30

    Increasing Clouds

    • 24
    • 35

    Partly Sunny

    • 26
    • 40

    Partly Sunny

    • 28
    • 42

    Mostly Cloudy

    • 30
    • 43

    Chance Rain/Snow

    • 24
    • 41

    Chance Rain/Snow

Today 28 Dec Wallowa County

Mostly sunny. Highs in the mid 20s to lower 30s.

Tonight 28 Dec Wallowa County

Partly cloudy. Lows 15 to 21.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lostine Reservoir Temperature Statistics

December Temperature

La Grande/Union County Airport (29.8 miles)

  • Lowest 1 December, 2025

    23 °F

  • Average December

    41.8 °F

  • Highest 11 December, 2025

    57.9 °F

Climate (2020–Present)

La Grande/Union County Airport (29.8 miles)

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  • Average Low 2020–2025

    38.2 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    62.5 °F
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