Copeland Reservoirs Weather Forecast

    • 50
    • 78

    Rain Showers Likely

    • 53
    • 79

    Slight Chance Thunderstorms

    • 56
    • 86

    Mostly Sunny

    • 57
    • 90

    Slight Chance Thunderstorms

    • 56
    • 89

    Mostly Sunny

    • 54
    • 88

    Mostly Sunny

    • 56
    • 87

    Mostly Sunny

Today 21 Jul Malheur County

Increasing Clouds. A chance of Showers this Morning, then Showers likely with a chance of Thunderstorms this afternoon. Chance of rain 70 percent. Not as warm with Highs 76 to 83. Northwest Winds 10 to 15 Mph. Gusts to 25 Mph this afternoon.

Tonight 21 Jul Malheur County

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms this Evening, then a slight chance of Showers after midnight. Chance of rain 30 percent. Lows 51 to 59. Northwest Winds 10 to 15 Mph. Gusts to 30 Mph this evening.

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Copeland Reservoirs Temperature Statistics

July Temperature

Ontario Municipal Airport (54.1 miles)

  • Lowest 5 July, 2025

    50.6 °F

  • Average July

    80 °F

  • Highest 1 July, 2025

    104.6 °F

Climate (2020–Present)

Ontario Municipal Airport (54.1 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    67.1 °F
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