Santa Margarita Lake Weather Forecast

    • 43
    • 76

    Mostly Sunny

    • 41
    • 74

    Partly Sunny

    • 42
    • 73

    Partly Sunny

    • 43
    • 67

    Mostly Cloudy

    • 40
    • 64

    Partly Sunny

    • 40
    • 60

    Chance Rain Showers

Today 26 Oct San Luis Obispo County Mountains

Sunny. Highs from the mid 70s to around 80 at low Elevations to the mid 60s to around 70 at high Elevations.

Tonight 26 Oct San Luis Obispo County Mountains

Mostly clear. Lows in the 40s.

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Santa Margarita Lake Temperature Statistics

October Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (11.2 miles)

  • Lowest 13 October, 2026

    45.6 °F

  • Average October

    69 °F

  • Highest 3 October, 2026

    99.6 °F

Climate (2021–2026)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (11.2 miles)

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  • Average Low 2021–2026

    50.3 °F

  • Average 2021–2026

    61.3 °F

  • Average High 2021–2026

    73.4 °F
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