Wheaton Creek Reservoir Weather Forecast

    • 57
    • 86

    Sunny

    • 63
    • 92

    Mostly Sunny

    • 65
    • 95

    Partly Sunny

    • 59
    • 91

    Slight Chance Thunderstorms

    • 58
    • 87

    Slight Chance Thunderstorms

    • 57
    • 84

    Slight Chance Thunderstorms

    • 59
    • 87

    Mostly Sunny

Today 29 Jun Malheur County

Sunny. Highs 85 to 92. North Winds up to 10 Mph.

Tonight 29 Jun Malheur County

Mostly clear. Lows 51 to 61. North Winds 10 to 15 Mph.

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Wheaton Creek Reservoir Temperature Statistics

June Temperature

Ontario Municipal Airport (43.5 miles)

  • Lowest 23 June, 2025

    42.7 °F

  • Average June

    71.1 °F

  • Highest 9 June, 2025

    98.7 °F

Climate (2020–Present)

Ontario Municipal Airport (43.5 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    67 °F
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