Yes

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

Why? Because it's not very warm out!
58°F14°C & Partly Cloudy

Wind is 5 mph8 km/h from the South, gusting to 14 mph22 km/h
October 17
10am57°F14°C6 mph9 km/h SouthPartly Cloudy
11am56°F13°C4 mph6 km/h SouthMostly Cloudy
12pm55°F13°C2 mph4 km/h SouthwestPartly Cloudy
1pm53°F12°C3 mph5 km/h WestMostly Clear
2pm52°F11°C4 mph6 km/h WestMostly Clear
3pm51°F11°C4 mph6 km/h NorthwestPartly Cloudy
4pm50°F10°C4 mph6 km/h NorthwestPartly Cloudy
5pm50°F10°C4 mph7 km/h NorthwestPartly Cloudy
6pm49°F10°C4 mph7 km/h NorthwestMostly Clear
7pm49°F9°C4 mph6 km/h NorthwestMostly Clear
8pm49°F10°C3 mph6 km/h NorthwestPartly Cloudy
9pm51°F11°C3 mph5 km/h NorthwestPartly Cloudy
DateLowHighWindDayNight
October 1653°F12°C67°F19°C7 mph12 km/h from SouthwestMostly CloudyPartly Cloudy
October 1749°F9°C68°F20°C5 mph9 km/h from SouthMostly ClearPartly Cloudy
October 1857°F14°C80°F27°C15 mph25 km/h from NorthWindyCloudy
October 1955°F13°C68°F20°C6 mph9 km/h from SouthwestCloudyMostly Cloudy
October 2051°F10°C69°F20°C3 mph5 km/h from SouthCloudyRain
October 2153°F11°C68°F20°C15 mph24 km/h from WestRainMostly Cloudy
October 2248°F9°C60°F16°C7 mph11 km/h from SouthMostly CloudyPartly Cloudy

Yes

Low of 49°F10°C, High of 67°F20°C
Wind: 5 mph9 km/h
Precipitation: None

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