Olive Hills Reservoir Weather Forecast

    • 44
    • 59

    Partly Sunny

    • 44
    • 60

    Partly Sunny

    • 42
    • 58

    Partly Sunny

    • 46
    • 63

    Partly Sunny

    • 50
    • 67

    Partly Sunny

    • 52
    • 72

    Partly Sunny

    • 52
    • 73

    Partly Sunny

Today 28 Jan Orange County Inland

Partly cloudy. Highs around 59. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 28 Jan Orange County Inland

Partly cloudy. Lows 40 to 44. Areas of Winds south 10 Mph becoming east overnight.

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Olive Hills Reservoir Temperature Statistics

January Temperature

Fullerton, Fullerton Municipal Airport (9.3 miles)

  • Lowest 14 January, 2025

    39.7 °F

  • Average January

    57.8 °F

  • Highest 23 January, 2025

    83.6 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (9.3 miles)

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  • Average Low 2020–2025

    56.9 °F

  • Average 2020–2025

    66.1 °F

  • Average High 2020–2025

    76.9 °F
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