Santa Margarita Lake Weather Forecast

    • 44
    • 69

    Rain Likely

    • 39
    • 59

    Chance Rain

    • 38
    • 66

    Mostly Sunny

    • 41
    • 70

    Partly Sunny

    • 41
    • 68

    Mostly Sunny

Today 20 Apr San Luis Obispo County Mountains

Partly cloudy. Highs from the 70s at low Elevations to the mid 60s to around 70 at high Elevations. Southwest Winds 15 to 25 Mph in the afternoon.

Tonight 20 Apr San Luis Obispo County Mountains

Mostly cloudy. A 50 percent chance of rain after midnight. Lows in the mid to upper 40s. South Winds 15 to 25 Mph.

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Santa Margarita Lake Temperature Statistics

April Temperature

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

  • Lowest 13 April, 2026

    43.6 °F

  • Average April

    61.2 °F

  • Highest 4 April, 2026

    85.6 °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

    50.2 °F

  • Average 2021–2026

    60.7 °F

  • Average High 2021–2026

    73.2 °F
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