Santa Margarita Weather Forecast

    • 47
    • 78

    Decreasing Clouds

    • 51
    • 81

    Mostly Sunny

    • 60
    • 95

    Sunny

    • 58
    • 92

    Mostly Sunny

    • 56
    • 89

    Mostly Sunny

    • 53
    • 83

    Mostly Sunny

Today 21 Sep Southern Salinas Valley

Cloudy in the morning then sunny. Highs in the mid 70s to mid 80s. Southwest Winds around 15 Mph in the afternoon.

Tonight 21 Sep Southern Salinas Valley

Mostly clear in the evening then partly cloudy. Lows in the mid 40s to mid 50s.

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Santa Margarita Temperature Statistics

September Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (10.6 miles)

  • Lowest 7 September, 2026

    49.6 °F

  • Average September

    69.4 °F

  • Highest 9 September, 2026

    107.7 °F

Climate (2021–2026)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (10.6 miles)

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  • Average Low 2021–2026

    50.2 °F

  • Average 2021–2026

    61.1 °F

  • Average High 2021–2026

    73.3 °F
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