Islay Park Weather Forecast

    • 64
    • 90

    Slight Chance Thunderstorms

    • 65
    • 102

    Hot

    • 59
    • 96

    Mostly Sunny

    • 58
    • 87

    Mostly Sunny

    • 56
    • 78

    Mostly Sunny

    • 57
    • 81

    Mostly Sunny

    • 56
    • 79

    Sunny

Today 8 Sep San Luis Obispo County Inland Central Coast

Mostly cloudy with a 20 percent chance of Showers and Thunderstorms. Highs in the mid 70s to lower 80s except around 90 farthest inland.

Tonight 8 Sep San Luis Obispo County Inland Central Coast

Mostly cloudy with a 20 percent chance of Showers and Thunderstorms in the Evening, becoming partly cloudy after midnight. Lows in the upper 50s and 60s.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Islay Park Temperature Statistics

September Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (0.6 miles)

  • Lowest 6 September, 2026

    52 °F

  • Average September

    66.6 °F

  • Highest 6 September, 2026

    82 °F

Climate (2021–2026)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (0.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    50.2 °F

  • Average 2021–2026

    61.1 °F

  • Average High 2021–2026

    73.3 °F
Get WillyWeather+ to remove ads