Johnson Creek Reservoir Weather Forecast

    • 43
    • 68

    Chance Rain Showers

    • 42
    • 71

    Decreasing Clouds

    • 44
    • 71

    Chance Rain Showers

    • 44
    • 76

    Mostly Sunny

    • 46
    • 81

    Mostly Sunny

    • 46
    • 84

    Mostly Sunny

    • 44
    • 81

    Partly Sunny

Today 15 Sep Ochoco-John Day Highlands

Partly cloudy. Highs in the mid 60s to lower 70s.

Tonight 15 Sep Ochoco-John Day Highlands

Mostly cloudy with a 50 percent chance of rain Showers. Lows in the mid 30s to lower 40s. North wind 5 to 15 Mph overnight. Gusts up to 30 Mph. Rainfall Amounts less than a tenth of an inch.

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  • Temperature Real-Time

Johnson Creek Reservoir Temperature Statistics

September Temperature

Prineville Airport (8.1 miles)

  • Lowest 12 September, 2026

    33.8 °F

  • Average September

    56 °F

  • Highest 9 September, 2026

    86 °F

Climate (2021–2026)

Prineville Airport (8.1 miles)

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  • Average Low 2021–2026

    34.6 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    62.9 °F
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