Rock Creek Lake Weather Forecast

    • 47
    • 66

    Increasing Clouds

    • 50
    • 70

    Partly Sunny

    • 51
    • 73

    Partly Sunny

    • 53
    • 76

    Mostly Sunny

    • 56
    • 80

    Partly Sunny

    • 52
    • 76

    Partly Sunny

    • 51
    • 73

    Mostly Sunny

Today 30 Sep Ochoco-John Day Highlands

Sunny. Highs in the upper 60s to mid 70s.

Tonight 30 Sep Ochoco-John Day Highlands

Partly cloudy. Lows in the upper 30s to mid 40s.

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  • Temperature Real-Time

Rock Creek Lake Temperature Statistics

September Temperature

Grant County Regional Airport (42.3 miles)

  • Lowest 28 September, 2026

    35.6 °F

  • Average September

    58 °F

  • Highest 10 September, 2026

    86.4 °F

Climate (2021–2026)

Grant County Regional Airport (42.3 miles)

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  • Average Low 2021–2026

    39 °F

  • Average 2021–2026

    50.2 °F

  • Average High 2021–2026

    62 °F
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