Mann Creek State Park Weather Forecast

    • 52
    • 81

    Mostly Sunny

    • 47
    • 79

    Increasing Clouds

    • 40
    • 60

    Mostly Cloudy

    • 37
    • 57

    Chance Rain Showers

    • 39
    • 58

    Partly Sunny

    • 41
    • 62

    Slight Chance Rain Showers

    • 39
    • 61

    Partly Sunny

Today 8 Oct Lower Treasure Valley

Mostly clear. Areas of fog through the day. Lows 35 to 40. Highs 61 to 66.

Tonight 8 Oct Lower Treasure Valley

Mostly clear. Lows 45 to 52. Light Winds.

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Mann Creek State Park Temperature Statistics

October Temperature

Ontario Municipal Airport (26.7 miles)

  • Lowest 4 October, 2026

    43 °F

  • Average October

    63.2 °F

  • Highest 6 October, 2026

    86 °F

Climate (2021–2026)

Ontario Municipal Airport (26.7 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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