South Lake Weather Forecast

    • 56
    • 86

    Increasing Clouds

    • 58
    • 79

    Mostly Cloudy

    • 58
    • 75

    Mostly Cloudy

    • 56
    • 74

    Mostly Cloudy

    • 53
    • 73

    Mostly Cloudy

    • 55
    • 76

    Mostly Sunny

Today 29 Mar Orange County Inland

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Local visibility one quarter mile or less at Times this morning. Highs 83 to 86 towards the coast to 90 farther inland. Areas of Winds northwest to 10 Mph.

Tonight 29 Mar Orange County Inland

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 55 to 58. Areas of Winds south 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Lake Temperature Statistics

March Temperature

John Wayne-Orange County Airport (3.1 miles)

  • Lowest 6 March, 2026

    52 °F

  • Average March

    68.9 °F

  • Highest 17 March, 2026

    95.6 °F

Climate (2021–Present)

John Wayne-Orange County Airport (3.1 miles)

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  • Average Low 2021–2026

    59 °F

  • Average 2021–2026

    65.9 °F

  • Average High 2021–2026

    73.7 °F
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