St Marys Weather Forecast
- 14
- 29
Sunny
- 15
- 31
Mostly sunny
- 19
- 31
Partly cloudy
- 20
- 25
Shower or two
- 19
- 26
Showers increasing
- 19
- 27
Shower or two
- 17
- 29
Shower or two
Today 15 Mar Sydney
The chance of fog early this morning. Sunny afternoon. Light winds becoming northeasterly 15 to 25 km/h in the early afternoon then becoming light in the late evening.
St Marys Temperature Statistics View More
March Temperature
Penrith Lakes (10km)
Lowest 14 March, 2026
15.9 °CAverage March
22.8 °CHighest 6 March, 2026
31.4 °C
Climate (2021–Present)
Penrith Lakes (10km)
Average Low 2021–2026
12.5 °CAverage 2021–2026
17.8 °CAverage High 2021–2026
24.8 °C