Montana De Oro State Park Weather Forecast

    • 54
    • 62

    Cloudy

    • 56
    • 62

    Rain

    • 56
    • 62

    Rain Showers

    • 52
    • 61

    Rain Showers

    • 47
    • 58

    Rain Showers

    • 46
    • 59

    Slight Chance Rain Showers

    • 47
    • 61

    Mostly Sunny

Today 22 Dec Santa Lucia Mountains

Areas of low Clouds and fog. A slight chance of rain in the Morning, then a chance of Showers in the afternoon. Visibility one quarter mile or less. Highs in the upper 50s to mid 60s. Chance of precipitation 50 percent.

Tonight 22 Dec Santa Lucia Mountains

Cloudy. A 50 percent chance of rain after midnight. Lows in the upper 40s to mid 50s. Southeast Winds around 15 Mph after midnight.

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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 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 (12.4 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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