St Marys Weather Forecast
- 1
- 12
Possible shower
- 3
- 13
Shower or two
- 3
- 14
Partly cloudy
- 3
- 13
Mostly sunny
- 2
- 13
Possible shower
- 7
- 13
Showers
- 5
- 13
Shower or two
Today 4 Aug East Coast
Partly cloudy. Areas of morning frost about higher ground. Medium chance of showers. Light winds. Overnight temperatures falling to between zero and 4 with daytime temperatures reaching between 10 and 14.
St Marys Temperature Statistics View More
August Temperature
St Helens Aerodrome (28km)
Lowest 1 August, 2026
3 °CAverage August
8.8 °CHighest 2 August, 2026
15.7 °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