Newport Bay - Harbor Island Weather Forecast

    • 65
    • 72

    Increasing Clouds

    • 64
    • 73

    Mostly Cloudy

    • 64
    • 72

    Mostly Cloudy

    • 63
    • 71

    Mostly Cloudy

    • 63
    • 72

    Partly Sunny

    • 64
    • 72

    Partly Sunny

Today 18 Jul Orange County Coastal

Patchy fog this morning. Mostly cloudy with a slight chance of Showers and Thunderstorms this Morning, then partly cloudy this afternoon. Highs around 72 at the Beaches to 76 farther inland and near higher coastal Terrain. Areas of Winds west 10 to 15 Mph. Gusts to 25 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 18 Jul Orange County Coastal

Mostly clear in the evening. Becoming cloudy overnight with patchy fog. Lows 61 to 64. Areas of Winds west 10 to 15 Mph in the evening becoming light.

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Newport Bay - Harbor Island Temperature Statistics

July Temperature

John Wayne-Orange County Airport (5 miles)

  • Lowest 3 July, 2025

    61 °F

  • Average July

    70.1 °F

  • Highest 8 July, 2025

    80.7 °F

Climate (2020–Present)

John Wayne-Orange County Airport (5 miles)

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  • Average Low 2020–2025

    58.6 °F

  • Average 2020–2025

    65.6 °F

  • Average High 2020–2025

    73.6 °F
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