Montana De Oro State Park Weather Forecast

    • 54
    • 70

    Sunny

    • 53
    • 70

    Sunny

    • 52
    • 71

    Sunny

    • 54
    • 72

    Sunny

    • 53
    • 76

    Sunny

    • 53
    • 75

    Sunny

Today 6 Dec Santa Lucia Mountains

Sunny. Highs in the mid 60s to lower 70s. Northeast Winds around 15 Mph.

Tonight 6 Dec Santa Lucia Mountains

Clear. Lows in the upper 30s to mid 40s except the lower to mid 50s warmer Hills. Northeast Winds 15 to 25 Mph.

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Montana De Oro State Park Temperature Statistics

December Temperature

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

  • Lowest 2 December, 2025

    39.9 °F

  • Average December

    51.4 °F

  • Highest 2 December, 2025

    69.1 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    49.9 °F

  • Average 2020–2025

    60.3 °F

  • Average High 2020–2025

    72.8 °F
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