Rancho Grande Park Weather Forecast

    • 50
    • 76

    Patchy Fog

    • 48
    • 69

    Patchy Fog

    • 53
    • 67

    Chance Rain Showers

    • 53
    • 68

    Rain Showers Likely

    • 52
    • 66

    Chance Rain Showers

    • 51
    • 68

    Mostly Sunny

Today 18 Oct San Luis Obispo County Inland Central Coast

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

Tonight 18 Oct San Luis Obispo County Inland Central Coast

Areas of low Clouds and fog. Lows in the mid 40s to lower 50s.

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Rancho Grande Park Temperature Statistics

October Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (7.5 miles)

  • Lowest 13 October, 2026

    45.6 °F

  • Average October

    69.9 °F

  • Highest 3 October, 2026

    99.6 °F

Climate (2021–2026)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (7.5 miles)

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  • Average Low 2021–2026

    50.3 °F

  • Average 2021–2026

    61.2 °F

  • Average High 2021–2026

    73.4 °F
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