William R Mason Regional Park Weather Forecast

    • 69
    • 88

    Becoming Sunny

    • 69
    • 89

    Mostly Sunny

    • 71
    • 89

    Mostly Sunny

    • 72
    • 90

    Mostly Sunny

    • 72
    • 93

    Mostly Sunny

    • 71
    • 94

    Partly Sunny

Today 22 Aug Orange County Coastal

Partly cloudy this morning. Becoming mostly sunny. Highs 78 to 83 at the Beaches to 84 to 89 farther inland and near higher coastal Terrain. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 22 Aug Orange County Coastal

Mostly clear in the evening. Becoming partly cloudy. Lows 66 to 69. Areas of Winds southwest to 10 Mph in the evening becoming light.

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William R Mason Regional Park Temperature Statistics

August Temperature

John Wayne-Orange County Airport (2.5 miles)

  • Lowest 5 August, 2026

    68.6 °F

  • Average August

    76.5 °F

  • Highest 9 August, 2026

    89.7 °F

Climate (2021–2026)

John Wayne-Orange County Airport (2.5 miles)

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  • Average Low 2021–2026

    59 °F

  • Average 2021–2026

    66.1 °F

  • Average High 2021–2026

    73.7 °F
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