St Marys South Weather Forecast

    • 17
    • 21

    Rain

    • 17
    • 24

    Showers

    • 16
    • 25

    Shower or two

    • 15
    • 26

    Shower or two

    • 15
    • 29

    Possible shower

Today 18 Jan Sydney

Cloudy. Very high chance of rain. The chance of a thunderstorm this morning, possibly severe with heavy rain which may lead to flash flooding along the coastal fringe. Winds southeasterly 25 to 35 km/h.

Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

St Marys South Temperature Statistics View More

January Temperature

Horsley Park (11km)

  • Lowest 1 January, 2026

    15.4 °C

  • Average January

    22.9 °C

  • Highest 10 January, 2026

    41.5 °C

Climate (2021–Present)

Horsley Park (11km)

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

  • Average Low 2021–2026

    12.2 °C

  • Average 2021–2026

    17.3 °C

  • Average High 2021–2026

    23.7 °C
Get WillyWeather+ to remove ads