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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Aussie Brief Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
St Marys will reach the temperature shown in the live forecast above, with conditions influenced by a westerly wind flow across western Sydney. Expect a clear to partly cloudy sky, with the chance of a late shower depending on the day’s system.
What is the weather in St Marys right now?
The live forecast above gives the current temperature and conditions for St Marys. For a block-by-block picture, check the Sydney Weather page, which includes the local st marys weather radar loop showing any rain moving in from the Blue Mountains.
What will the weather in St Marys be like over the next week?
This forecast covers today and tomorrow. For the full outlook, refer to the weather in saint marys nsw 10 days and st marys weather 14 day guides on our hub. Conditions often shift quickly when a front comes through from the west.
Will it rain in St Marys this afternoon?
Use the st marys weather hourly breakdown on the Bureau of Meteorology site to see the rain chance for each hour. A westerly change often brings showers by late afternoon, especially in spring and autumn.
Is there a severe weather warning for St Marys?
Check our Severe Weather Warning page for any current alerts. The bom weather st marys page is the official source for warnings about heavy rain, damaging winds, or heatwaves affecting the Penrith area.
What is the typical summer temperature in St Marys?
St Marys often reaches 28–32°C in January, with occasional days above 35°C. The westerly wind makes it feel hotter than coastal suburbs. Always check the weather st marys tomorrow forecast for the latest.
How accurate is the 14-day forecast for St Marys?
A 14-day forecast gives a general trend, not a reliable day-by-day prediction. The st marys weather 14 day outlook is useful for planning, but always confirm with the 7-day forecast closer to the date.
Where can I see the St Marys weather radar?
The Sydney radar from the Bureau of Meteorology covers St Marys well. It shows rain moving in from the west and is updated every 10 minutes. Visit the Australia weather hub for the radar link.