Black Lake Weather Forecast

    • 46
    • 61

    Patchy Fog

    • 44
    • 59

    Gradual Clearing

    • 43
    • 62

    Mostly Sunny

    • 43
    • 63

    Mostly Cloudy

    • 42
    • 63

    Mostly Sunny

    • 45
    • 63

    Mostly Cloudy

    • 45
    • 63

    Patchy Fog

Today 22 Jan San Luis Obispo County Beaches

Mostly cloudy. Isolated Showers in the Morning, then a slight chance of rain in the afternoon. Highs in the lower 60s. Chance of precipitation 20 percent.

Tonight 22 Jan San Luis Obispo County Beaches

Partly cloudy in the evening then Areas of low Clouds and fog. Lows in the mid 40s to around 50.

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Black Lake Temperature Statistics

January Temperature

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

  • Lowest 10 January, 2026

    35.1 °F

  • Average January

    54.6 °F

  • Highest 14 January, 2026

    81 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    50 °F

  • Average 2021–2026

    60.3 °F

  • Average High 2021–2026

    72.7 °F
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