South Lake Weather Forecast

    • 70
    • 93

    Becoming Sunny

    • 71
    • 92

    Mostly Sunny

    • 73
    • 93

    Mostly Sunny

    • 73
    • 93

    Hot

    • 74
    • 97

    Hot

    • 74
    • 98

    Hot

Today 23 Aug Orange County Inland

Mostly sunny. Highs 87 to 92 towards the coast to 96 to 99 farther inland. Light Winds becoming west 10 Mph this afternoon.

Tonight 23 Aug Orange County Inland

Mostly clear. Lows 65 to 70. Light Winds.

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South Lake Temperature Statistics

August Temperature

John Wayne-Orange County Airport (3.1 miles)

  • Lowest 5 August, 2026

    68.6 °F

  • Average August

    76.5 °F

  • Highest 9 August, 2026

    89.7 °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

    66.1 °F

  • Average High 2021–2026

    73.7 °F
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