Lake Owyhee State Park Weather Forecast

    • 39
    • 64

    Mostly Sunny

    • 46
    • 69

    Mostly Sunny

    • 43
    • 69

    Sunny

    • 45
    • 72

    Mostly Sunny

    • 46
    • 73

    Mostly Sunny

    • 45
    • 71

    Mostly Sunny

Today 13 Oct Malheur County

Widespread frost with Areas of fog this morning. Sunny, warmer with Highs 58 to 68. West Winds 10 to 15 Mph with Gusts to 25 Mph.

Tonight 13 Oct Malheur County

Mostly clear. Lows 27 to 37. West Winds 10 to 15 Mph.

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Lake Owyhee State Park Temperature Statistics

October Temperature

Ontario Municipal Airport (29.8 miles)

  • Lowest 7 October, 2026

    39.7 °F

  • Average October

    62.9 °F

  • Highest 6 October, 2026

    86.6 °F

Climate (2021–2026)

Ontario Municipal Airport (29.8 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    67.1 °F
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