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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Southern Focus Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Blackett’s weather follows a typical western Sydney pattern — hot summers, mild winters and a distinct wet season. Check the live forecast above before planning outdoor time, particularly in summer when afternoon heat can be intense.
What is the typical weather pattern for Blackett?
Blackett sits in Sydney’s west, where temperatures often run several degrees higher than near the coast, especially in summer. The area experiences warm, sometimes humid summers and cool, dry winters with clear, sunny days.
- Summer (December–February): Hot, with maximums frequently above 30°C. Heatwave conditions are possible when north-westerly winds arrive from the interior.
- Autumn (March–May): Warm days give way to mild, settled weather. Humidity drops and clear skies become more common.
- Winter (June–August): Cool and dry. Daytime highs average around 16–18°C, and overnight lows can drop below 5°C inland.
- Spring (September–November): Warming trend begins, with increasing humidity and the return of afternoon storms later in the season.
How does rainfall behave in Blackett?
Rainfall in Blackett is spread across the year, with a slight peak in late summer and early autumn due to thunderstorms and occasional east-coast lows. The area receives less rain than Sydney’s eastern suburbs.
- Annual average rainfall: roughly 700–800 mm, with most rain falling between November and March.
- Thunderstorms are most common from October to March, sometimes bringing heavy downpours and localised flooding.
- Winter months are the driest, with June and July typically recording the lowest monthly totals.
Does Blackett get hotter than central Sydney?
Yes, noticeably. Western Sydney suburbs like Blackett often record temperatures 5–8°C higher than the coast during summer afternoons. The lack of sea breeze and urban heating effects drive these higher readings.
When does the heat become dangerous in Blackett?
Extreme heat typically arrives when a north-westerly wind draws hot air from the outback. During severe heatwaves, maximums can exceed 40°C. Check the live forecast and heat-health warnings, and plan outdoor activity for early morning.
Does it snow in Blackett?
No. Snow is extremely rare in western Sydney. Blackett’s winter minimums occasionally drop close to freezing, but the area lacks sufficient moisture and elevation for snow. Frost is possible on clear, calm winter mornings.