Walnut Canyon Reservoir Weather Forecast

    • 54
    • 76

    Increasing Clouds

    • 56
    • 75

    Partly Sunny

    • 58
    • 73

    Mostly Cloudy

    • 55
    • 71

    Mostly Cloudy

    • 54
    • 67

    Rain Showers Likely

    • 52
    • 68

    Chance Rain Showers

Today 27 Oct Orange County Inland

Partly cloudy. Highs 74 to 77.

Tonight 27 Oct Orange County Inland

Partly cloudy. Patchy fog overnight. Lows 52 to 57. Light Winds.

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Walnut Canyon Reservoir Temperature Statistics

October Temperature

Corona Airport (9.3 miles)

  • Lowest 13 October, 2026

    46 °F

  • Average October

    75.2 °F

  • Highest 3 October, 2026

    107.1 °F

Climate (2021–2026)

Corona Airport (9.3 miles)

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  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    65.3 °F

  • Average High 2021–2026

    78.5 °F
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