Johnson Creek Reservoir Weather Forecast

    • 49
    • 84

    Sunny

    • 52
    • 90

    Sunny

    • 57
    • 96

    Mostly Sunny

    • 59
    • 96

    Partly Sunny

    • 60
    • 97

    Hot

    • 59
    • 95

    Mostly Sunny

Today 20 Aug Ochoco-John Day Highlands

Sunny. Highs in the mid 70s to lower 80s. Gusts up to 20 Mph in the afternoon.

Tonight 20 Aug Ochoco-John Day Highlands

Mostly clear. Lows in the mid 40s to lower 50s. Gusts up to 20 Mph in the evening.

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Johnson Creek Reservoir Temperature Statistics

August Temperature

Prineville Airport (8.1 miles)

  • Lowest 8 August, 2025

    35.6 °F

  • Average August

    68.7 °F

  • Highest 11 August, 2025

    98.6 °F

Climate (2020–Present)

Prineville Airport (8.1 miles)

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  • Average Low 2020–2025

    34.2 °F

  • Average 2020–2025

    49.3 °F

  • Average High 2020–2025

    62.8 °F
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