Costa Mesa Weather Forecast

    • 57
    • 73

    Patchy Fog

    • 59
    • 80

    Mostly Sunny

    • 60
    • 81

    Partly Sunny

    • 59
    • 75

    Mostly Cloudy

    • 58
    • 72

    Mostly Cloudy

    • 57
    • 70

    Rain Showers Likely

    • 54
    • 66

    Chance Rain Showers

Today 8 Nov Orange County Coastal

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 69 to 73 at the Beaches to 74 to 77 farther inland and near higher coastal Terrain. Light Winds.

Tonight 8 Nov Orange County Coastal

Partly cloudy. Patchy fog overnight. Lows 56 to 59. 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 6 November, 2025

    55.9 °F

  • Average November

    64 °F

  • Highest 1 November, 2025

    72 °F

Climate (2020–Present)

John Wayne-Orange County Airport (3.7 miles)

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  • Average Low 2020–2025

    58.6 °F

  • Average 2020–2025

    65.6 °F

  • Average High 2020–2025

    73.4 °F
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