St Marys Weather Forecast
- 7
- 15
Rain
- 8
- 18
Partly cloudy
- 5
- 15
Partly cloudy
- 4
- 19
Sunny
- 5
- 13
Partly cloudy
- 5
- 19
Sunny
- 4
- 22
Sunny
Today 5 Sep East Coast
Cloudy. Very high chance of rain. The chance of a thunderstorm in the late morning and afternoon. Winds northwest to northeasterly 15 to 25 km/h tending west to northwesterly in the early afternoon then tending west to southwesterly 20 to 30 km/h in the evening. Overnight temperatures falling to between 5 and 9 with daytime temperatures reaching between 12 and 17.
St Marys Temperature Statistics View More
September Temperature
St Helens Aerodrome (28km)
Lowest 4 September, 2026
6.1 °CAverage September
12.3 °CHighest 1 September, 2026
17.3 °C
Climate (2021–2026)
St Helens Aerodrome (28km)
Average Low 2021–2026
9.4 °CAverage 2021–2026
13.4 °CAverage High 2021–2026
18.3 °C