Costa Mesa Weather Forecast

    • 55
    • 66

    Increasing Clouds

    • 54
    • 67

    Increasing Clouds

    • 55
    • 68

    Mostly Cloudy

    • 53
    • 66

    Mostly Cloudy

    • 53
    • 63

    Chance Rain Showers

    • 53
    • 63

    Mostly Cloudy

    • 53
    • 66

    Partly Sunny

Today 30 Apr Orange County Coastal

Mostly cloudy this morning. Becoming partly cloudy. Highs around 65 at the Beaches to 69 farther inland and near higher coastal Terrain. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 30 Apr Orange County Coastal

Mostly cloudy. Lows 52 to 56. Areas of Winds southwest 10 Mph this evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Costa Mesa Temperature Statistics

April Temperature

John Wayne-Orange County Airport (3.7 miles)

  • Lowest 4 April, 2025

    51.7 °F

  • Average April

    62.5 °F

  • Highest 5 April, 2025

    81.6 °F

Climate (2020–Present)

John Wayne-Orange County Airport (3.7 miles)

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  • Average Low 2020–2025

    58.8 °F

  • Average 2020–2025

    65.7 °F

  • Average High 2020–2025

    73.7 °F
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