William R Mason Regional Park Weather Forecast

    • 61
    • 73

    Increasing Clouds

    • 61
    • 75

    Partly Sunny

    • 63
    • 77

    Partly Sunny

    • 66
    • 78

    Partly Sunny

    • 64
    • 79

    Partly Sunny

    • 62
    • 79

    Partly Sunny

Today 21 Jun Orange County Coastal

Cloudy this morning. Becoming mostly sunny. Highs around 69 at the Beaches to 70 to 74 farther inland and near higher coastal Terrain. Areas of Winds southwest to 10 Mph.

Tonight 21 Jun Orange County Coastal

Partly cloudy this evening. Becoming mostly cloudy. Lows 57 to 61. Areas of Winds west 10 Mph this evening becoming light.

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William R Mason Regional Park Temperature Statistics

June Temperature

John Wayne-Orange County Airport (2.5 miles)

  • Lowest 2 June, 2026

    62.7 °F

  • Average June

    69.3 °F

  • Highest 12 June, 2026

    82.7 °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 °F

  • Average High 2021–2026

    73.7 °F
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