William R Mason Regional Park Weather Forecast

    • 58
    • 66

    Rain Showers

    • 58
    • 66

    Rain Showers

    • 53
    • 65

    Rain Showers

    • 48
    • 62

    Rain Showers Likely

    • 46
    • 62

    Slight Chance Rain Showers

    • 47
    • 65

    Mostly Sunny

Today 23 Dec Orange County Coastal

Cloudy. Patchy fog in the morning. A slight chance of Showers in the afternoon. Highs 63 to 66. Areas of Winds southeast 10 to 15 Mph with Gusts to 25 Mph. Chance of measurable precipitation 20 percent.

Tonight 23 Dec Orange County Coastal

Showers likely in the Evening, then Showers overnight. Locally heavy rainfall possible overnight. Lows around 58. Areas of Winds southeast 10 to 15 Mph with Gusts to 30 Mph becoming 15 to 25 Mph with Gusts to 40 Mph overnight.

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William R Mason Regional Park Temperature Statistics

December Temperature

John Wayne-Orange County Airport (2.5 miles)

  • Lowest 6 December, 2025

    48 °F

  • Average December

    59.6 °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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