Santa Margarita Lake Weather Forecast

    • 34
    • 73

    Sunny

    • 35
    • 71

    Partly Sunny

    • 34
    • 66

    Partly Sunny

    • 40
    • 61

    Mostly Sunny

    • 38
    • 61

    Mostly Sunny

    • 38
    • 64

    Partly Sunny

    • 38
    • 65

    Partly Sunny

Today 19 Jan San Luis Obispo County Mountains

Sunny. Highs from the mid to upper 70s at low Elevations to the mid 60s to lower 70s at high Elevations.

Tonight 19 Jan San Luis Obispo County Mountains

Mostly clear. Lows in the 50s to around 60 except the mid to upper 30s Colder Valleys and Slopes.

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Santa Margarita Lake Temperature Statistics

January Temperature

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

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  • Average Low 2021–2026

    50 °F

  • Average 2021–2026

    60.4 °F

  • Average High 2021–2026

    72.7 °F
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