William R Mason Regional Park Weather Forecast

    • 60
    • 77

    Decreasing Clouds

    • 59
    • 76

    Partly Sunny

    • 60
    • 75

    Partly Sunny

    • 59
    • 75

    Partly Sunny

    • 59
    • 76

    Partly Sunny

    • 59
    • 74

    Partly Sunny

Today 31 May Orange County Coastal

Partly cloudy with patchy fog in the morning. Becoming mostly sunny. Highs 68 to 72 at the Beaches to 74 to 78 farther inland and near higher coastal Terrain. Areas of Winds south 10 to 15 Mph.

Tonight 31 May Orange County Coastal

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows around 60. Areas of Winds southwest 10 Mph becoming southeast overnight.

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  • Temperature Real-Time

William R Mason Regional Park Temperature Statistics

May Temperature

John Wayne-Orange County Airport (2.5 miles)

  • Lowest 6 May, 2026

    56.6 °F

  • Average May

    66.2 °F

  • Highest 20 May, 2026

    82.7 °F

Climate (2021–Present)

John Wayne-Orange County Airport (2.5 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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