Summer Lake Weather Forecast

    • 56
    • 80

    Mostly Sunny

    • 55
    • 76

    Mostly Sunny

    • 58
    • 79

    Mostly Sunny

    • 59
    • 80

    Mostly Sunny

    • 56
    • 81

    Mostly Sunny

    • 58
    • 82

    Mostly Sunny

Today 31 Aug East Bay Interior Valleys

Sunny. Highs near 80. Southwest Winds 10 to 20 Mph.

Tonight 31 Aug East Bay Interior Valleys

Mostly clear. Lows in the mid 50s. West Winds 5 to 15 Mph.

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Summer Lake Temperature Statistics

August Temperature

Livermore, Livermore Municipal Airport (22.4 miles)

  • Lowest 29 August, 2026

    55.9 °F

  • Average August

    74.7 °F

  • Highest 3 August, 2026

    102.7 °F

Climate (2021–2026)

Livermore, Livermore Municipal Airport (22.4 miles)

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  • Average Low 2021–2026

    49 °F

  • Average 2021–2026

    61 °F

  • Average High 2021–2026

    74.1 °F
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