Estero Bay Weather Forecast

    • 57
    • 62

    Rain Showers Likely

    • 58
    • 61

    Chance Rain Showers

    • 58
    • 62

    Patchy Fog

    • 58
    • 65

    Patchy Fog

    • 60
    • 66

    Slight Chance Rain Showers

    • 59
    • 63

    Slight Chance Rain Showers

    • 59
    • 64

    Sunny

Today 18 Sep San Luis Obispo County Beaches

Cloudy with a chance of Showers and a slight chance of Thunderstorms. Highs from the mid to upper 60s at the Beaches to the mid 70s inland. Chance of precipitation 50 percent.

Tonight 18 Sep San Luis Obispo County Beaches

Showers likely with a slight chance of Thunderstorms in the Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the 50s to around 60. Chance of precipitation 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Estero Bay Temperature Statistics

September Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (23 miles)

  • Lowest 7 September, 2025

    50 °F

  • Average September

    65.9 °F

  • Highest 1 September, 2025

    87.1 °F

Climate (2020–Present)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (23 miles)

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  • Average Low 2020–2025

    49.9 °F

  • Average 2020–2025

    60.4 °F

  • Average High 2020–2025

    73 °F
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