Costa Mesa Weather Forecast

    • 48
    • 63

    Partly Sunny

    • 50
    • 64

    Partly Sunny

    • 47
    • 61

    Rain Likely

    • 43
    • 57

    Rain Likely

    • 44
    • 60

    Slight Chance Rain Showers

    • 47
    • 64

    Mostly Sunny

Today 3 Mar Orange County Coastal

Partly cloudy this morning. Becoming mostly sunny. Highs 61 to 64. Areas of Winds west 10 to 20 Mph. Gusts to 25 Mph. Becoming 35 Mph this afternoon.

Tonight 3 Mar Orange County Coastal

Partly cloudy. Lows 46 to 49. Areas of Winds west 10 to 15 Mph with Gusts to 30 Mph becoming southeast overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Costa Mesa Temperature Statistics

March Temperature

John Wayne-Orange County Airport (3.7 miles)

  • Lowest 1 March, 2025

    57 °F

  • Average March

    59.2 °F

  • Highest 1 March, 2025

    63 °F

Climate (2020–Present)

John Wayne-Orange County Airport (3.7 miles)

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  • Average Low 2020–2025

    58.9 °F

  • Average 2020–2025

    65.8 °F

  • Average High 2020–2025

    73.8 °F
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