Yes

you do need a jacket based on the weather in Sydney NSW, Australia 27 minutes ago

Why? Because it's really really huffing out there!
60°F16°C & Windy

Wind is 18 mph29 km/h from the Southwest, gusting to 37 mph59 km/h
September 11
1am60°F16°C17 mph27 km/h SouthWindy
2am61°F16°C16 mph26 km/h SouthWindy
3am60°F16°C15 mph24 km/h SouthMostly Clear
4am59°F15°C12 mph20 km/h SouthClear
5am58°F14°C10 mph15 km/h SouthClear
6am57°F14°C9 mph14 km/h SouthwestClear
7am56°F13°C7 mph12 km/h SouthwestMostly Clear
8am55°F13°C7 mph11 km/h SouthwestMostly Clear
9am54°F12°C6 mph9 km/h WestMostly Clear
10am53°F12°C6 mph9 km/h WestPartly Cloudy
11am52°F11°C5 mph9 km/h WestPartly Cloudy
12pm51°F10°C6 mph9 km/h WestPartly Cloudy
DateLowHighWindDayNight
September 1052°F11°C61°F16°C15 mph24 km/h from SouthwestHeavy RainMostly Clear
September 1150°F10°C66°F19°C5 mph8 km/h from SoutheastMostly ClearMostly Clear
September 1249°F10°C67°F20°C6 mph9 km/h from EastClearMostly Clear
September 1351°F11°C71°F22°C5 mph7 km/h from NorthMostly ClearClear
September 1453°F12°C73°F23°C6 mph10 km/h from NorthPartly CloudyMostly Cloudy
September 1561°F16°C76°F25°C13 mph21 km/h from NorthwestMostly CloudyMostly Clear
September 1654°F12°C69°F21°C7 mph12 km/h from SouthwestClearClear

Yes

Low of 50°F10°C, High of 66°F19°C
Wind: 5 mph8 km/h
Precipitation: None

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