Walnut Weather Forecast

    • 52
    • 67

    Slight Chance Rain Showers

    • 52
    • 74

    Mostly Sunny

    • 54
    • 74

    Mostly Cloudy

    • 53
    • 74

    Mostly Sunny

    • 54
    • 78

    Mostly Sunny

    • 55
    • 82

    Partly Sunny

    • 54
    • 78

    Mostly Sunny

Today 13 Apr Orange County Inland

Partly cloudy. A chance of Showers. Highs 63 to 67. Areas of Winds west 10 to 15 Mph. Gusts to 25 Mph. Becoming 30 Mph this afternoon. Chance of measurable precipitation 40 percent.

Tonight 13 Apr Orange County Inland

Partly cloudy. Lows 47 to 52. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph this evening becoming light.

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  • Temperature Real-Time

Walnut Temperature Statistics

April Temperature

John Wayne-Orange County Airport (4.3 miles)

  • Lowest 4 April, 2026

    55.7 °F

  • Average April

    68 °F

  • Highest 4 April, 2026

    86.6 °F

Climate (2021–Present)

John Wayne-Orange County Airport (4.3 miles)

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  • Average Low 2021–2026

    59 °F

  • Average 2021–2026

    66 °F

  • Average High 2021–2026

    73.7 °F
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