Collins Reservoir Weather Forecast

    • 52
    • 81

    Mostly Sunny

    • 55
    • 82

    Slight Chance Thunderstorms

    • 57
    • 84

    Chance Rain Showers

    • 61
    • 87

    Chance Rain Showers

    • 60
    • 87

    Chance Rain Showers

    • 56
    • 83

    Chance Rain Showers

    • 55
    • 79

    Slight Chance Thunderstorms

Today 26 Jul Ochoco-John Day Highlands

Mostly clear.

Tonight 26 Jul Ochoco-John Day Highlands

Mostly clear. A 20 percent chance of Showers and Thunderstorms in the evening. Lows in the mid 40s to lower 50s. Gusts up to 20 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Collins Reservoir Temperature Statistics

July Temperature

Prineville Airport (47.8 miles)

  • Lowest 5 July, 2025

    37.4 °F
  • Average July

    70.7 °F
  • Highest 8 July, 2025

    96.8 °F

Climate (2020–Present)

Prineville Airport (47.8 miles)

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  • Average Low 2020–2025

    34.1 °F
  • Average 2020–2025

    49.3 °F
  • Average High 2020–2025

    62.8 °F
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