Black Lake Weather Forecast

    • 56
    • 72

    Patchy Fog

    • 57
    • 71

    Mostly Cloudy

    • 56
    • 69

    Patchy Fog

    • 57
    • 69

    Patchy Fog

    • 60
    • 71

    Mostly Sunny

    • 59
    • 72

    Partly Sunny

    • 58
    • 69

    Partly Sunny

Today 19 Sep San Luis Obispo County Beaches

Partly cloudy. Highs in the mid 60s to mid 70s.

Tonight 19 Sep San Luis Obispo County Beaches

Cloudy. Patchy fog after midnight. Lows in the mid 50s. Northwest Winds around 15 Mph in the evening.

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Black Lake Temperature Statistics

September Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (12.4 miles)

  • Lowest 7 September, 2026

    49.6 °F

  • Average September

    69.7 °F

  • Highest 9 September, 2026

    107.7 °F

Climate (2021–2026)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (12.4 miles)

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  • Average Low 2021–2026

    50.2 °F

  • Average 2021–2026

    61.1 °F

  • Average High 2021–2026

    73.3 °F
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