Costa Mesa Weather Forecast

    • 52
    • 75

    Sunny

    • 55
    • 85

    Mostly Sunny

    • 53
    • 76

    Mostly Cloudy

    • 52
    • 71

    Mostly Cloudy

    • 52
    • 72

    Partly Sunny

    • 52
    • 74

    Partly Sunny

    • 51
    • 70

    Slight Chance Rain Showers

Today 3 Feb Orange County Coastal

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Local visibility one quarter mile or less at Times this morning. Highs 72 to 75 at the Beaches to 80 farther inland and near higher coastal Terrain. Light Winds becoming west 10 Mph this afternoon.

Tonight 3 Feb Orange County Coastal

Mostly clear. Lows 51 to 56. Areas of Winds north 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Costa Mesa Temperature Statistics

February Temperature

John Wayne-Orange County Airport (3.7 miles)

  • Lowest 1 February, 2026

    53.1 °F

  • Average February

    64.9 °F

  • Highest 1 February, 2026

    79 °F

Climate (2021–Present)

John Wayne-Orange County Airport (3.7 miles)

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  • Average Low 2021–2026

    58.8 °F

  • Average 2021–2026

    65.7 °F

  • Average High 2021–2026

    73.4 °F
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