William R Mason Regional Park Weather Forecast

    • 60
    • 75

    Mostly Cloudy

    • 58
    • 68

    Rain Showers

    • 57
    • 66

    Rain Showers

    • 55
    • 66

    Chance Rain Showers

    • 51
    • 64

    Chance Rain Showers

    • 50
    • 64

    Chance Rain Showers

    • 51
    • 65

    Slight Chance Rain Showers

Today 30 Dec Orange County Coastal

Sunny. Highs 69 to 72 at the Beaches to 73 farther inland and near higher coastal Terrain. Areas of Winds northeast 10 to 15 Mph. Gusts to 25 Mph in the morning.

Tonight 30 Dec Orange County Coastal

Partly cloudy with a slight chance of Sprinkles this Evening, then cloudy overnight. Lows around 59. Areas of Winds east 10 Mph.

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William R Mason Regional Park Temperature Statistics

December Temperature

John Wayne-Orange County Airport (2.5 miles)

  • Lowest 28 December, 2025

    45 °F

  • Average December

    59.7 °F

  • Highest 9 December, 2025

    82 °F

Climate (2020–Present)

John Wayne-Orange County Airport (2.5 miles)

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  • Average Low 2020–2025

    58.7 °F

  • Average 2020–2025

    65.6 °F

  • Average High 2020–2025

    73.3 °F
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