Port San Luis Weather Forecast

    • 56
    • 58

    Rain Showers

    • 55
    • 56

    Rain Showers

    • 52
    • 55

    Rain Showers

    • 52
    • 56

    Slight Chance Rain Showers

    • 52
    • 59

    Mostly Sunny

    • 54
    • 61

    Mostly Sunny

Today 24 Dec San Luis Obispo County Beaches

Showers with a slight chance of Thunderstorms. Some Thunderstorms may produce heavy rainfall. Highs around 60. South Winds 20 to 30 Mph with Gusts to 40 Mph. Gusts to 65 Mph in the morning.

Tonight 24 Dec San Luis Obispo County Beaches

Showers with a slight chance of Thunderstorms. Some Thunderstorms may produce heavy rainfall. Lows in the lower to mid 50s. South Winds 25 to 35 Mph with Gusts to 65 Mph.

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Port San Luis Temperature Statistics

December Temperature

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