Yes

you do need a jacket based on the weather in Hawthorn East VIC 3123, Australia 1 second ago

Why? Because too cold for just a hoodie, too warm for a parka and it's super windy outside!
50°F10°C & Cloudy

Wind is 12 mph20 km/h from the North, gusting to 28 mph45 km/h
August 14
4pm50°F10°C13 mph21 km/h NorthCloudy
5pm51°F11°C15 mph24 km/h NorthCloudy
6pm52°F11°C15 mph24 km/h NorthCloudy
7pm53°F11°C17 mph27 km/h NorthWindy
8pm54°F12°C18 mph29 km/h NorthWindy
9pm56°F13°C17 mph27 km/h NorthWindy
10pm57°F14°C17 mph27 km/h NorthWindy
11pm58°F15°C16 mph25 km/h NorthWindy
August 15
12am59°F15°C14 mph23 km/h NorthwestCloudy
1am57°F14°C12 mph19 km/h NorthwestDrizzle
2am56°F14°C11 mph18 km/h NorthwestDrizzle
3am55°F13°C9 mph14 km/h NorthwestDrizzle
DateLowHighWindDayNight
August 1445°F7°C59°F15°C14 mph22 km/h from NorthDrizzleDrizzle
August 1541°F5°C52°F11°C8 mph13 km/h from WestDrizzleDrizzle
August 1640°F5°C53°F12°C5 mph9 km/h from NorthDrizzleMostly Clear
August 1737°F3°C55°F13°C4 mph7 km/h from SouthMostly ClearMostly Clear
August 1836°F2°C58°F15°C3 mph4 km/h from EastClearMostly Clear
August 1938°F3°C62°F17°C6 mph9 km/h from NorthClearClear
August 2044°F7°C63°F17°C8 mph13 km/h from NorthMostly ClearMostly Cloudy

Yes

Low of 41°F5°C, High of 52°F11°C
Wind: 8 mph13 km/h
Precipitation: 60% rain

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