Walnut Canyon Reservoir Weather Forecast

    • 50
    • 72

    Chance Rain Showers

    • 49
    • 70

    Partly Sunny

    • 50
    • 75

    Partly Sunny

    • 53
    • 74

    Partly Sunny

    • 51
    • 68

    Mostly Cloudy

    • 50
    • 69

    Partly Sunny

    • 51
    • 73

    Partly Sunny

Today 21 Apr Orange County Inland

Partly cloudy. A slight chance of Showers this afternoon. Highs 70 to 73. Areas of Winds south to 10 Mph becoming southwest with Gusts to 25 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 21 Apr Orange County Inland

Mostly cloudy. A chance of Showers this evening. Lows 49 to 54. Areas of Winds west 10 to 15 Mph. Gusts to 25 Mph this evening. Chance of measurable precipitation 50 percent.

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Walnut Canyon Reservoir Temperature Statistics

April Temperature

Corona Airport (9.3 miles)

  • Lowest 13 April, 2026

    43 °F

  • Average April

    65.1 °F

  • Highest 4 April, 2026

    91 °F

Climate (2021–Present)

Corona Airport (9.3 miles)

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  • Average Low 2021–2026

    52.3 °F

  • Average 2021–2026

    65.1 °F

  • Average High 2021–2026

    78.3 °F
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