South Lake Weather Forecast

    • 68
    • 83

    Decreasing Clouds

    • 69
    • 84

    Partly Sunny

    • 70
    • 85

    Mostly Sunny

    • 70
    • 86

    Mostly Sunny

    • 70
    • 87

    Partly Sunny

    • 69
    • 85

    Partly Sunny

Today 19 Jul Orange County Inland

Partly cloudy in the morning. Becoming mostly sunny. Highs 81 to 85 towards the coast to 87 farther inland. Light Winds becoming southwest 10 Mph in the afternoon.

Tonight 19 Jul Orange County Inland

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 62 to 68. Areas of Winds southwest to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Lake Temperature Statistics

July Temperature

John Wayne-Orange County Airport (3.1 miles)

  • Lowest 3 July, 2026

    62.7 °F

  • Average July

    72.3 °F

  • Highest 14 July, 2026

    85.6 °F

Climate (2021–2026)

John Wayne-Orange County Airport (3.1 miles)

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  • Average Low 2021–2026

    59 °F

  • Average 2021–2026

    66 °F

  • Average High 2021–2026

    73.7 °F
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