St Marys Weather Forecast
- 9
- 23
Sunny
- 8
- 23
Sunny
- 9
- 24
Mostly sunny
- 12
- 22
Partly cloudy
- 12
- 22
Partly cloudy
- 10
- 24
Partly cloudy
- 10
- 25
Sunny
Today 18 Apr Sydney
Sunny. The chance of fog in the west early this morning. Light winds becoming south to southeasterly 15 to 25 km/h in the middle of the day then becoming light in the evening.
St Marys Temperature Statistics View More
April Temperature
Penrith Lakes (10km)
Lowest 13 April, 2026
7.9 °CAverage April
18.5 °CHighest 7 April, 2026
32.6 °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