Morro Bay Weather Forecast

    • 55
    • 62

    Mostly Cloudy

    • 54
    • 63

    Mostly Cloudy

    • 57
    • 70

    Partly Sunny

    • 57
    • 71

    Mostly Cloudy

    • 55
    • 66

    Mostly Cloudy

    • 55
    • 64

    Partly Sunny

Today 16 Sep San Luis Obispo County Beaches

Mostly cloudy. Patchy drizzle in the morning. Highs from the lower to mid 60s at the Beaches to the lower to mid 70s inland.

Tonight 16 Sep San Luis Obispo County Beaches

Low Clouds and fog developing. Lows in the lower to mid 50s.

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Morro Bay Temperature Statistics

September Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (14.9 miles)

  • Lowest 7 September, 2026

    49.6 °F

  • Average September

    70.4 °F

  • Highest 9 September, 2026

    107.7 °F

Climate (2021–2026)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (14.9 miles)

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  • Average Low 2021–2026

    50.2 °F

  • Average 2021–2026

    61.1 °F

  • Average High 2021–2026

    73.3 °F
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