Grindstone Reservoir Weather Forecast

    • 36
    • 65

    Increasing Clouds

    • 37
    • 68

    Partly Sunny

    • 40
    • 71

    Mostly Sunny

    • 42
    • 75

    Mostly Sunny

    • 41
    • 77

    Mostly Sunny

    • 40
    • 77

    Partly Sunny

Today 19 May Ochoco-John Day Highlands

Sunny. Highs in the 60s. Gusts up to 20 Mph in the afternoon.

Tonight 19 May Ochoco-John Day Highlands

Partly cloudy. Lows in the mid 30s to lower 40s. Gusts up to 20 Mph in the evening.

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  • Temperature Real-Time

Grindstone Reservoir Temperature Statistics

May Temperature

Burns Municipal Airport (46 miles)

  • Lowest 14 May, 2026

    25.6 °F

  • Average May

    54.2 °F

  • Highest 12 May, 2026

    90.6 °F

Climate (2021–Present)

Burns Municipal Airport (46 miles)

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  • Average Low 2021–2026

    32.3 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    62.6 °F
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