Montana De Oro State Park Weather Forecast

    • 67
    • 75

    Partly Sunny

    • 67
    • 93

    Mostly Sunny

    • 64
    • 87

    Sunny

    • 59
    • 82

    Mostly Sunny

    • 58
    • 72

    Mostly Sunny

    • 58
    • 73

    Mostly Sunny

    • 57
    • 73

    Mostly Sunny

Today 8 Sep Santa Lucia Mountains

Partly cloudy in the morning then mostly cloudy. A 20 percent chance of Showers and Thunderstorms. Highs in the mid 80s to mid 90s except around 80 closer to the coast.

Tonight 8 Sep Santa Lucia Mountains

Partly cloudy. A 20 percent chance of Showers and Thunderstorms in the evening. Lows in the 60s except the mid to upper 70s warmer Hills.

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Montana De Oro State Park Temperature Statistics

September Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (12.4 miles)

  • Lowest 6 September, 2026

    52 °F

  • Average September

    66.6 °F

  • Highest 6 September, 2026

    82 °F

Climate (2021–2026)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (12.4 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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