Yes

you do need a jacket based on the weather in Merrylands NSW 2160, Australia 1 second ago

Why? Because a jacket will keep you cozy, but you won't break a seat and it's fairly windy outside!
56°F13°C & Cloudy

Wind is 9 mph14 km/h from the South, gusting to 21 mph33 km/h
October 27
12pm56°F13°C9 mph14 km/h SouthCloudy
1pm55°F13°C8 mph12 km/h SouthCloudy
2pm55°F13°C9 mph15 km/h SouthCloudy
3pm54°F12°C7 mph12 km/h SouthCloudy
4pm53°F12°C7 mph12 km/h SouthCloudy
5pm53°F12°C7 mph11 km/h SouthCloudy
6pm53°F11°C6 mph10 km/h SouthCloudy
7pm52°F11°C5 mph9 km/h SouthCloudy
8pm53°F12°C5 mph8 km/h SouthCloudy
9pm55°F13°C5 mph9 km/h SouthCloudy
10pm57°F14°C6 mph10 km/h SoutheastCloudy
11pm59°F15°C9 mph15 km/h SoutheastCloudy
DateLowHighWindDayNight
October 2655°F13°C77°F25°C9 mph14 km/h from SouthPartly CloudyDrizzle
October 2752°F11°C63°F17°C7 mph12 km/h from EastDrizzleDrizzle
October 2854°F12°C66°F19°C4 mph6 km/h from EastRainRain
October 2955°F13°C71°F22°C5 mph9 km/h from SoutheastDrizzlePartly Cloudy
October 3057°F14°C76°F25°C5 mph8 km/h from NortheastMostly CloudyMostly Cloudy
October 3160°F16°C83°F28°C5 mph8 km/h from SoutheastPartly CloudyPartly Cloudy
November 161°F16°C83°F28°C5 mph8 km/h from NortheastPartly CloudyPartly Cloudy

Yes

Low of 53°F12°C, High of 64°F18°C
Wind: 7 mph12 km/h
Precipitation: 50% rain

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