Shell Beach Weather Forecast

    • 52
    • 71

    Patchy Fog

    • 54
    • 65

    Gradual Clearing

    • 57
    • 65

    Mostly Cloudy

    • 56
    • 62

    Chance Rain Showers

    • 56
    • 61

    Chance Rain Showers

    • 57
    • 62

    Rain Showers

    • 56
    • 60

    Rain Showers

Today 18 Dec San Luis Obispo County Beaches

Areas of low Clouds and fog in the morning then partly cloudy. Fog locally dense with visibility one quarter mile or less. Highs in the mid 60s to mid 70s. North Winds around 15 Mph.

Tonight 18 Dec San Luis Obispo County Beaches

Clear in the evening then Areas of low Clouds and fog. Lows around 50. Northwest Winds around 15 Mph in the evening.

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Shell Beach Temperature Statistics

December Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (5.6 miles)

  • Lowest 4 December, 2025

    37 °F

  • Average December

    57.4 °F

  • Highest 10 December, 2025

    82 °F

Climate (2020–Present)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (5.6 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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