Yes

you do need a jacket based on the weather in Parramatta NSW 2150, Australia 1 second ago

Why? Because it's cool. Pleasantly cool, but cool!
57°F14°C & Cloudy

Wind is 2 mph3 km/h from the Northwest, gusting to 7 mph11 km/h
September 1
8pm61°F16°C2 mph4 km/h WestMostly Clear
9pm63°F17°C2 mph3 km/h NorthMostly Clear
10pm66°F19°C2 mph3 km/h NorthMostly Clear
11pm68°F20°C4 mph7 km/h NorthMostly Clear
September 2
12am70°F21°C5 mph8 km/h NorthMostly Clear
1am71°F22°C7 mph11 km/h NorthClear
2am70°F21°C7 mph11 km/h NorthClear
3am68°F20°C8 mph12 km/h NorthMostly Clear
4am64°F18°C8 mph13 km/h NortheastMostly Clear
5am62°F17°C8 mph13 km/h NortheastMostly Clear
6am60°F15°C6 mph10 km/h NortheastMostly Clear
7am58°F14°C4 mph6 km/h NorthwestMostly Clear
DateLowHighWindDayNight
September 148°F9°C71°F22°C5 mph7 km/h from NorthMostly ClearMostly Clear
September 245°F7°C73°F23°C5 mph8 km/h from NorthwestMostly ClearMostly Cloudy
September 351°F10°C74°F23°C9 mph14 km/h from NorthwestMostly CloudyPartly Cloudy
September 448°F9°C65°F18°C8 mph12 km/h from SoutheastPartly CloudyMostly Cloudy
September 547°F8°C67°F19°C5 mph9 km/h from NortheastPartly CloudyPartly Cloudy
September 647°F8°C73°F23°C7 mph11 km/h from NorthPartly CloudyMostly Clear
September 755°F13°C79°F26°C10 mph16 km/h from NorthwestMostly ClearPartly Cloudy

Yes

Low of 45°F7°C, High of 73°F23°C
Wind: 5 mph8 km/h
Precipitation: None

Support This Page