Walnut Weather Forecast

    • 56
    • 75

    Slight Chance Rain Showers

    • 56
    • 73

    Rain Showers

    • 51
    • 68

    Rain Showers

    • 52
    • 68

    Mostly Sunny

    • 52
    • 73

    Mostly Sunny

    • 54
    • 76

    Partly Sunny

Today 10 Apr Orange County Inland

Patchy fog this morning. Partly cloudy. Highs 72 to 75. Areas of Winds south to 10 Mph becoming southwest with Gusts to 25 Mph this afternoon.

Tonight 10 Apr Orange County Inland

Mostly cloudy. A slight chance of Showers overnight. Lows 52 to 57. Areas of Winds west 10 to 15 Mph this evening becoming light. Chance of measurable precipitation 20 percent.

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  • Temperature Forecast NOAA

  • 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

    68.3 °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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