St Clair Weather Forecast

    • 21
    • 39

    Sunny morning. Possible storm

    • 25
    • 35

    Possible shower

    • 19
    • 33

    Partly cloudy

    • 17
    • 33

    Partly cloudy

    • 17
    • 27

    Possible shower

    • 16
    • 26

    Cloudy

    • 15
    • 26

    Partly cloudy

Today 21 Dec Sydney

Sunny morning. Slight chance of a shower in the afternoon and evening. The chance of a thunderstorm in the afternoon and early evening. Light winds becoming northwest to northeasterly 15 to 25 km/h in the middle of the day then tending south to southwesterly 15 to 20 km/h in the evening.

Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

St Clair Temperature Statistics View More

December Temperature

Horsley Park (9km)

  • Lowest 3 December, 2025

    9.6 °C

  • Average December

    22.4 °C

  • Highest 19 December, 2025

    41 °C

Climate (2020–Present)

Horsley Park (9km)

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

  • Average Low 2020–2025

    12.2 °C

  • Average 2020–2025

    17.2 °C

  • Average High 2020–2025

    23.6 °C
Get WillyWeather+ to remove ads