Collins Reservoir Weather Forecast

    • 47
    • 70

    Increasing Clouds

    • 50
    • 74

    Partly Sunny

    • 50
    • 77

    Partly Sunny

    • 51
    • 79

    Mostly Sunny

    • 55
    • 83

    Partly Sunny

    • 52
    • 80

    Partly Sunny

    • 50
    • 77

    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

Collins Reservoir Temperature Statistics

September Temperature

Prineville Airport (47.8 miles)

  • Lowest 28 September, 2026

    28.4 °F

  • Average September

    56 °F

  • Highest 9 September, 2026

    86 °F

Climate (2021–2026)

Prineville Airport (47.8 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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