Mann Creek State Park Weather Forecast

    • 38
    • 50

    Rain

    • 37
    • 47

    Rain

    • 30
    • 43

    Rain

    • 24
    • 36

    Chance Snow

    • 24
    • 33

    Mostly Sunny

    • 26
    • 34

    Partly Sunny

    • 26
    • 34

    Partly Sunny

Today 24 Dec Lower Treasure Valley

Rain. Chance of rain 90 percent. Highs 52 to 59. Windy. Southeast Winds 15 to 25 Mph with Gusts to 45 Mph.

Tonight 24 Dec Lower Treasure Valley

Rain. Areas of fog. Chance of rain 90 percent. Lows 37 to 42. Southeast Winds up to 10 Mph.

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Mann Creek State Park Temperature Statistics

December Temperature

Ontario Municipal Airport (26.7 miles)

  • Lowest 1 December, 2025

    21 °F

  • Average December

    36.6 °F

  • Highest 17 December, 2025

    57 °F

Climate (2020–Present)

Ontario Municipal Airport (26.7 miles)

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  • Average Low 2020–2025

    42.8 °F

  • Average 2020–2025

    54.8 °F

  • Average High 2020–2025

    67.1 °F
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