Yes

you do need a jacket based on the weather in Yarraville VIC 3013, Australia 1 second ago

Why? Because it's on the windy side!
69°F20°C & Cloudy

Wind is 11 mph17 km/h from the North, gusting to 25 mph40 km/h
September 6
4am67°F19°C10 mph17 km/h NortheastMostly Cloudy
5am64°F18°C10 mph15 km/h NortheastCloudy
6am63°F17°C8 mph13 km/h NortheastCloudy
7am63°F17°C8 mph13 km/h NortheastCloudy
8am63°F17°C8 mph13 km/h NortheastCloudy
9am63°F17°C8 mph13 km/h NortheastCloudy
10am63°F17°C9 mph15 km/h NortheastCloudy
11am64°F18°C11 mph18 km/h NortheastCloudy
12pm65°F18°C12 mph19 km/h NortheastMostly Cloudy
1pm64°F18°C13 mph21 km/h NorthMostly Cloudy
2pm64°F18°C15 mph25 km/h NorthWindy
3pm64°F18°C17 mph28 km/h NorthWindy
DateLowHighWindDayNight
September 537°F3°C71°F22°C10 mph16 km/h from NorthMostly ClearMostly Cloudy
September 658°F15°C70°F21°C20 mph32 km/h from NorthRainDrizzle
September 752°F11°C68°F20°C10 mph16 km/h from NorthwestMostly ClearMostly Clear
September 847°F9°C64°F18°C6 mph10 km/h from SouthwestPartly CloudyRain
September 947°F8°C52°F11°C12 mph20 km/h from SouthRainDrizzle
September 1047°F8°C57°F14°C9 mph15 km/h from SouthwestDrizzlePartly Cloudy
September 1145°F7°C60°F16°C7 mph12 km/h from WestMostly CloudyPartly Cloudy

Yes

Low of 58°F15°C, High of 70°F21°C
Wind: 20 mph32 km/h
Precipitation: 72% rain

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