St Marys South Weather Forecast
- 16
- 30
Mostly clear
- 19
- 32
Showers. Storm developing
- 18
- 24
Possible shower
- 13
- 24
Partly cloudy
- 10
- 26
Sunny
- 11
- 28
Sunny
- 14
- 26
Partly cloudy
Today 24 Oct Sydney
Mostly clear. The chance of a thunderstorm early this evening. Winds northeasterly 15 to 25 km/h becoming light in the late evening.
St Marys South Temperature Statistics View More
October Temperature
Horsley Park (11 km)
Lowest 9 October, 2026
7.8 °CAverage October
17.9 °CHighest 12 October, 2026
34.9 °C
Climate (2021–2026)
Horsley Park (11 km)
Average Low 2021–2026
12.5 °CAverage 2021–2026
17.5 °CAverage High 2021–2026
23.9 °C