Santa Margarita Lake County Park Weather Forecast

    • 55
    • 97

    Hot

    • 53
    • 99

    Hot

    • 54
    • 87

    Chance Rain Showers

    • 55
    • 80

    Chance Rain Showers

    • 55
    • 86

    Mostly Sunny

    • 58
    • 89

    Mostly Sunny

Today 16 Sep San Luis Obispo County Mountains

Sunny. Highs from 94 to 100 at low Elevations to the mid 80s to lower 90s at high Elevations. Southwest Winds around 15 Mph in the afternoon.

Tonight 16 Sep San Luis Obispo County Mountains

Mostly clear. Lows in the mid 60s to lower 70s except the mid to upper 50s Colder Valleys and Slopes. West Winds around 15 Mph in the evening.

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Santa Margarita Lake County Park Temperature Statistics

September Temperature

Paso Robles Municipal Airport (26.1 miles)

  • Lowest 7 September, 2025

    48.9 °F

  • Average September

    69 °F

  • Highest 1 September, 2025

    99 °F

Climate (2020–Present)

Paso Robles Municipal Airport (26.1 miles)

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  • Average Low 2020–2025

    44.9 °F

  • Average 2020–2025

    60.5 °F

  • Average High 2020–2025

    78 °F
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