Santa Margarita Lake Weather Forecast

    • 37
    • 64

    Sunny

    • 38
    • 64

    Mostly Sunny

    • 42
    • 72

    Sunny

    • 43
    • 76

    Sunny

    • 44
    • 75

    Patchy Fog

    • 43
    • 71

    Sunny

    • 46
    • 76

    Sunny

Today 5 Mar San Luis Obispo County Mountains

Areas of low Clouds and fog in the morning then sunny. A 20 percent chance of rain in the morning. Highs from the lower to mid 60s at low Elevations to the 50s at high Elevations. North Winds around 15 Mph.

Tonight 5 Mar San Luis Obispo County Mountains

Clear. Lows in the mid 30s to around 40. Northeast Winds around 15 Mph.

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Santa Margarita Lake Temperature Statistics

March Temperature

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

  • Lowest 1 March, 2026

    48.9 °F

  • Average March

    57.6 °F

  • Highest 3 March, 2026

    73 °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

    50.1 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    72.9 °F
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