Costa Mesa Weather Forecast

    • 47
    • 61

    Mostly Sunny

    • 48
    • 64

    Mostly Sunny

    • 50
    • 71

    Mostly Sunny

    • 52
    • 73

    Mostly Sunny

    • 51
    • 69

    Partly Sunny

    • 53
    • 69

    Mostly Sunny

    • 55
    • 75

    Mostly Sunny

Today 3 Apr Orange County Coastal

Mostly sunny this Morning, then partly cloudy with a slight chance of Showers and Thunderstorms this afternoon. Highs 60 to 64. Areas of Winds south 10 to 15 Mph. Gusts to 25 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 3 Apr Orange County Coastal

Mostly clear. Lows 44 to 48. Areas of Winds west to 10 Mph this evening becoming light.

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Costa Mesa Temperature Statistics

April Temperature

John Wayne-Orange County Airport (3.7 miles)

  • Lowest 1 April, 2025

    55.8 °F

  • Average April

    59.3 °F

  • Highest 1 April, 2025

    64.6 °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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