Walnut Canyon Reservoir Weather Forecast

    • 59
    • 82

    Increasing Clouds

    • 60
    • 75

    Rain Showers

    • 54
    • 69

    Rain Showers

    • 54
    • 72

    Mostly Sunny

    • 58
    • 79

    Mostly Sunny

    • 59
    • 80

    Partly Sunny

Today 20 Oct Orange County Inland

Partly cloudy. Highs 80 to 83.

Tonight 20 Oct Orange County Inland

Patchy fog this evening. Partly cloudy. Lows 57 to 62. Areas of Winds south to 10 Mph this evening becoming light.

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Walnut Canyon Reservoir Temperature Statistics

October Temperature

Corona Airport (9.3 miles)

  • Lowest 13 October, 2026

    46 °F

  • Average October

    79 °F

  • Highest 3 October, 2026

    107.1 °F

Climate (2021–2026)

Corona Airport (9.3 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    65.3 °F

  • Average High 2021–2026

    78.5 °F
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