St Marys Weather Forecast
- 23
- 27
Shower or two
- 17
- 24
Cloudy
- 17
- 25
Shower or two
- 17
- 25
Shower or two
- 17
- 27
Shower or two
- 16
- 31
Partly cloudy
- 18
- 36
Possible shower
Today 12 Feb Sydney
Cloudy. Medium chance of showers, becoming less likely later tonight. Winds southerly 30 to 45 km/h decreasing to 20 to 30 km/h in the late evening.
St Marys Temperature Statistics View More
February Temperature
Penrith Lakes (10km)
Lowest 3 February, 2026
15 °CAverage February
23.3 °CHighest 5 February, 2026
39 °C
Climate (2021–Present)
Penrith Lakes (10km)
Average Low 2021–2026
12.5 °CAverage 2021–2026
17.7 °CAverage High 2021–2026
24.8 °C