Grindstone Reservoir Weather Forecast

    • 42
    • 87

    Increasing Clouds

    • 31
    • 60

    Rain Showers Likely

    • 36
    • 67

    Mostly Sunny

    • 31
    • 66

    Partly Sunny

    • 27
    • 53

    Partly Sunny

    • 32
    • 59

    Mostly Sunny

Today 12 May Ochoco-John Day Highlands

Partly cloudy. Highs in the mid 80s to lower 90s. South wind 5 to 15 Mph with Gusts to around 30 Mph in the afternoon.

Tonight 12 May Ochoco-John Day Highlands

Partly cloudy. A 40 percent chance of rain Showers overnight. Lows in the lower to mid 40s. Southwest wind 5 to 15 Mph in the Evening, becoming light. Gusts up to 30 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Grindstone Reservoir Temperature Statistics

May Temperature

Burns Municipal Airport (46 miles)

  • Lowest 1 May, 2026

    26.7 °F

  • Average May

    56.2 °F

  • Highest 10 May, 2026

    82.9 °F

Climate (2021–Present)

Burns Municipal Airport (46 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    32.3 °F

  • Average 2021–2026

    47.9 °F

  • Average High 2021–2026

    62.7 °F
Get WillyWeather+ to remove ads