Yes

you do need a jacket based on the weather in Kellyville NSW 2155, Australia 1 second ago

Why? Because a jacket will keep you cozy, but you won't break a seat!
58°F15°C & Clear

Wind is 4 mph7 km/h from the Southwest, gusting to 11 mph18 km/h
April 17
1pm58°F15°C4 mph7 km/h SouthwestClear
2pm58°F14°C4 mph6 km/h SouthwestClear
3pm57°F14°C3 mph5 km/h WestClear
4pm56°F13°C3 mph4 km/h WestClear
5pm56°F14°C2 mph4 km/h WestClear
6pm60°F16°C2 mph4 km/h WestClear
7pm64°F18°C3 mph5 km/h WestClear
8pm68°F20°C3 mph5 km/h WestClear
9pm71°F22°C3 mph5 km/h SouthwestMostly Clear
10pm73°F23°C3 mph4 km/h SouthwestClear
11pm75°F24°C2 mph3 km/h SouthwestClear
April 18
12am76°F24°C2 mph3 km/h SouthClear
DateLowHighWindDayNight
April 1756°F13°C76°F25°C3 mph5 km/h from SouthClearClear
April 1856°F13°C84°F29°C4 mph6 km/h from NorthPartly CloudyClear
April 1957°F14°C84°F29°C4 mph6 km/h from NorthClearPartly Cloudy
April 2059°F15°C74°F23°C4 mph6 km/h from SouthRainRain
April 2157°F14°C71°F22°C10 mph15 km/h from SouthRainRain
April 2261°F16°C69°F21°C10 mph15 km/h from SoutheastRainDrizzle
April 2356°F13°C68°F20°C6 mph10 km/h from SouthDrizzlePartly Cloudy

Yes

Low of 55°F13°C, High of 84°F29°C
Wind: 4 mph6 km/h
Precipitation: None

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