Yes

you do need a jacket based on the weather in Wantirna VIC 3152, Australia 1 second ago

Why? Because it's close to hurricane level winds!
65°F18°C & Windy

Wind is 22 mph36 km/h from the Northwest, gusting to 52 mph83 km/h
October 22
6am63°F17°C23 mph37 km/h NorthwestDrizzle
7am60°F15°C21 mph34 km/h WestWindy
8am57°F14°C21 mph34 km/h WestDrizzle
9am54°F12°C20 mph32 km/h SouthwestDrizzle
10am53°F12°C15 mph25 km/h SouthwestDrizzle
11am52°F11°C12 mph20 km/h SouthwestDrizzle
12pm52°F11°C11 mph18 km/h WestCloudy
1pm51°F11°C10 mph16 km/h WestMostly Cloudy
2pm51°F10°C8 mph14 km/h WestMostly Cloudy
3pm50°F10°C7 mph12 km/h WestMostly Cloudy
4pm49°F10°C7 mph11 km/h WestMostly Cloudy
5pm49°F9°C6 mph10 km/h WestMostly Cloudy
DateLowHighWindDayNight
October 2151°F11°C68°F20°C12 mph20 km/h from NorthwestRainDrizzle
October 2248°F9°C63°F17°C6 mph10 km/h from SouthwestMostly CloudyMostly Cloudy
October 2348°F9°C62°F16°C5 mph9 km/h from SouthwestMostly CloudyPartly Cloudy
October 2446°F8°C65°F19°C4 mph6 km/h from NorthwestMostly CloudyRain
October 2550°F10°C64°F18°C6 mph10 km/h from WestRainDrizzle
October 2642°F5°C53°F12°C11 mph18 km/h from SouthDrizzleClear
October 2739°F4°C61°F16°C9 mph14 km/h from SoutheastMostly ClearMostly Clear

Yes

Low of 48°F9°C, High of 63°F17°C
Wind: 6 mph10 km/h
Precipitation: None

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