Costa Mesa Weather Forecast

    • 54
    • 68

    Increasing Clouds

    • 55
    • 71

    Patchy Fog

    • 56
    • 69

    Patchy Fog

    • 54
    • 66

    Mostly Cloudy

    • 56
    • 67

    Mostly Cloudy

    • 53
    • 65

    Chance Rain Showers

Today 20 Oct Orange County Coastal

Partly cloudy in the morning. Becoming mostly sunny. Patchy fog in the morning. Highs 65 to 70 at the Beaches to 71 farther inland and near higher coastal Terrain. Light Winds becoming west 15 Mph in the afternoon.

Tonight 20 Oct Orange County Coastal

Mostly clear in the evening. Becoming cloudy. Patchy fog overnight. Lows 50 to 55. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Costa Mesa Temperature Statistics

October Temperature

John Wayne-Orange County Airport (3.7 miles)

  • Lowest 13 October, 2021

    53.1 °F
  • Average October

    69.5 °F
  • Highest 3 October, 2021

    91.9 °F

Climate (2010–Present)

John Wayne-Orange County Airport (3.7 miles)

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  • Average Low 2010–Present

    59.1 °F
  • Average 2010–Present

    65.4 °F
  • Average High 2010–Present

    73.8 °F
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