Santa Margarita Weather Forecast

    • 30
    • 73

    Sunny

    • 31
    • 73

    Sunny

    • 34
    • 75

    Mostly Sunny

    • 37
    • 74

    Mostly Sunny

    • 45
    • 72

    Mostly Sunny

    • 43
    • 71

    Mostly Sunny

Today 13 Dec Southern Salinas Valley

Sunny. Highs in the 70s to lower 80s.

Tonight 13 Dec Southern Salinas Valley

Clear. Lows in the mid 20s to mid 30s except the mid 40s to around 50 warmer Hills.

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Santa Margarita Temperature Statistics

December Temperature

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

  • Lowest 4 December, 2025

    37 °F

  • Average December

    57.5 °F

  • Highest 10 December, 2025

    82 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    50 °F

  • Average 2020–2025

    60.3 °F

  • Average High 2020–2025

    72.8 °F
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