Costa Mesa Weather Forecast

    • 51
    • 65

    Decreasing Clouds

    • 50
    • 71

    Mostly Sunny

    • 53
    • 66

    Mostly Cloudy

    • 50
    • 64

    Chance Rain Showers

    • 50
    • 66

    Partly Sunny

    • 51
    • 67

    Mostly Sunny

Today 30 Nov Orange County Coastal

Mostly cloudy with patchy fog in the morning. Becoming partly cloudy. Highs around 63 at the Beaches to 64 to 67 farther inland and near higher coastal Terrain. Light Winds.

Tonight 30 Nov Orange County Coastal

Partly cloudy in the evening. Becoming mostly cloudy. Patchy fog. Lows around 50. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Costa Mesa Temperature Statistics

November Temperature

John Wayne-Orange County Airport (3.7 miles)

  • Lowest 19 November, 2025

    48.9 °F

  • Average November

    62.3 °F

  • Highest 26 November, 2025

    80.1 °F

Climate (2020–Present)

John Wayne-Orange County Airport (3.7 miles)

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  • Average Low 2020–2025

    58.7 °F

  • Average 2020–2025

    65.6 °F

  • Average High 2020–2025

    73.4 °F
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