Grindstone Reservoir Weather Forecast

    • 28
    • 42

    Increasing Clouds

    • 34
    • 43

    Rain/Snow

    • 28
    • 44

    Chance Rain/Snow

    • 25
    • 44

    Rain/Snow Likely

    • 20
    • 37

    Chance Snow

    • 22
    • 36

    Mostly Cloudy

Today 22 Dec Ochoco-John Day Highlands

Mostly sunny. Highs in the upper 30s to mid 40s. South wind 5 to 15 Mph in the afternoon. Gusts up to 25 Mph.

Tonight 22 Dec Ochoco-John Day Highlands

Mostly cloudy. Lows in the mid 20s to lower 30s.

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Grindstone Reservoir Temperature Statistics

December Temperature

Burns Municipal Airport (46 miles)

  • Lowest 1 December, 2025

    12 °F

  • Average December

    36.4 °F

  • Highest 11 December, 2025

    57.9 °F

Climate (2020–Present)

Burns Municipal Airport (46 miles)

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  • Average Low 2020–2025

    32.3 °F

  • Average 2020–2025

    47.7 °F

  • Average High 2020–2025

    62.3 °F
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