Costa Mesa Weather Forecast

    • 52
    • 62

    Rain Showers

    • 52
    • 63

    Chance Rain Showers

    • 53
    • 66

    Partly Sunny

    • 53
    • 67

    Mostly Sunny

    • 52
    • 66

    Patchy Fog

    • 53
    • 65

    Patchy Fog

Today 20 Nov Orange County Coastal

Mostly cloudy. A slight chance of Showers in the Morning, then a chance of Showers in the afternoon. Highs 59 to 62. Areas of Winds south 10 Mph. Chance of measurable precipitation 50 percent.

Tonight 20 Nov Orange County Coastal

Showers and a slight chance of Thunderstorms. Locally heavy rainfall possible in the evening. Lows around 51. Areas of Winds east 10 to 15 Mph with Gusts to 25 Mph.

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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 17 November, 2025

    55 °F

  • Average November

    63.7 °F

  • Highest 10 November, 2025

    78.1 °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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