Routzhan Park Weather Forecast

    • 37
    • 64

    Becoming Sunny

    • 39
    • 69

    Sunny

    • 42
    • 70

    Sunny

    • 46
    • 69

    Sunny

    • 46
    • 70

    Sunny

    • 47
    • 70

    Sunny

    • 48
    • 72

    Mostly Sunny

Today 3 Dec Santa Lucia Mountains

Sunny in the morning then mostly cloudy. Highs in the mid 50s to mid 60s. Northeast Winds 15 to 25 Mph.

Tonight 3 Dec Santa Lucia Mountains

Mostly clear in the evening then partly cloudy. Lows in the 30s to around 40 except the mid 40s to around 50 warmer Hills. Northeast Winds around 15 Mph.

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Routzhan Park Temperature Statistics

December Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (9.3 miles)

  • Lowest 1 December, 2025

    41 °F

  • Average December

    52 °F

  • Highest 1 December, 2025

    66.9 °F

Climate (2020–Present)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (9.3 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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