St Marys Weather Forecast
- 18
- 21
Possible shower
- 15
- 23
Shower or two
- 12
- 26
Mostly sunny
- 14
- 33
Sunny
- 17
- 28
Possible shower
- 18
- 31
Partly cloudy
- 18
- 33
Mostly sunny
Today 4 Apr Sydney
Cloudy. High chance of showers along the coastal fringe, medium chance elsewhere. Winds southerly 15 to 25 km/h.
St Marys Temperature Statistics View More
April Temperature
Penrith Lakes (10km)
Lowest 1 April, 2026
13.8 °CAverage April
19.7 °CHighest 1 April, 2026
29.5 °C
Climate (2021–Present)
Penrith Lakes (10km)
Average Low 2021–2026
12.5 °CAverage 2021–2026
17.8 °CAverage High 2021–2026
24.9 °C