Yes

you do need a jacket based on the weather in Broadway, Glebe NSW 2037, Australia 1 second ago

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

Wind is 6 mph9 km/h from the Northwest, gusting to 10 mph16 km/h
August 28
6am57°F14°C5 mph9 km/h NorthwestClear
7am56°F13°C6 mph9 km/h NorthwestClear
8am55°F13°C6 mph10 km/h NorthwestClear
9am55°F13°C7 mph11 km/h NorthwestClear
10am54°F12°C7 mph12 km/h NorthwestClear
11am53°F12°C7 mph12 km/h NorthwestClear
12pm53°F12°C7 mph11 km/h NorthwestClear
1pm52°F11°C6 mph10 km/h NorthwestClear
2pm52°F11°C6 mph9 km/h NorthwestClear
3pm51°F11°C6 mph9 km/h NorthwestClear
4pm51°F11°C6 mph10 km/h NorthwestClear
5pm51°F11°C7 mph11 km/h NorthwestClear
DateLowHighWindDayNight
August 2751°F11°C67°F19°C12 mph19 km/h from WestClearClear
August 2851°F11°C68°F20°C12 mph19 km/h from NorthwestMostly ClearMostly Clear
August 2949°F9°C62°F16°C16 mph25 km/h from SouthwestWindyMostly Clear
August 3045°F7°C65°F18°C5 mph9 km/h from NorthwestClearClear
August 3147°F8°C66°F19°C5 mph7 km/h from NorthwestClearPartly Cloudy
September 150°F10°C65°F19°C4 mph6 km/h from SouthwestPartly CloudyMostly Clear
September 249°F9°C67°F19°C7 mph11 km/h from WestMostly ClearMostly Clear

Yes

Low of 51°F11°C, High of 68°F20°C
Wind: 12 mph19 km/h
Precipitation: None

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