Grindstone Reservoir Weather Forecast

    • 30
    • 45

    Increasing Clouds

    • 27
    • 47

    Mostly Cloudy

    • 34
    • 41

    Rain

    • 33
    • 47

    Chance Rain/Snow

    • 28
    • 43

    Rain/Snow Likely

    • 27
    • 41

    Chance Snow

    • 26
    • 41

    Chance Snow

Today 30 Dec Ochoco-John Day Highlands

Sunny. Highs in the lower to mid 40s.

Tonight 30 Dec Ochoco-John Day Highlands

Partly cloudy. Lows in the lower 20s to lower 30s.

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  • Temperature Real-Time

Grindstone Reservoir Temperature Statistics

December Temperature

Burns Municipal Airport (46 miles)

  • Lowest 1 December, 2025

    12 °F

  • Average December

    36 °F

  • Highest 11 December, 2025

    57.9 °F

Climate (2020–Present)

Burns Municipal Airport (46 miles)

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  • Average Low 2020–2025

    32.4 °F

  • Average 2020–2025

    47.8 °F

  • Average High 2020–2025

    62.4 °F
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