Yes

you do need a jacket based on the weather in Dandenong VIC 3175, Australia 1 second ago

Why? Because it's cool. Pleasantly cool, but cool and it's so windy, your hat has officially retired from your head!
53°F11°C & Cloudy

Wind is 9 mph14 km/h from the North, gusting to 21 mph33 km/h
July 16
4am53°F11°C9 mph15 km/h NorthCloudy
5am51°F11°C10 mph15 km/h NorthCloudy
6am51°F10°C10 mph16 km/h NorthCloudy
7am50°F10°C10 mph16 km/h NorthCloudy
8am50°F10°C10 mph17 km/h NorthCloudy
9am50°F10°C11 mph18 km/h NorthCloudy
10am50°F10°C11 mph18 km/h NorthCloudy
11am50°F10°C11 mph18 km/h NorthCloudy
12pm50°F10°C11 mph18 km/h NorthMostly Cloudy
1pm49°F10°C12 mph19 km/h NorthMostly Cloudy
2pm49°F9°C12 mph20 km/h NorthMostly Cloudy
3pm49°F9°C12 mph20 km/h NorthMostly Cloudy
DateLowHighWindDayNight
July 1547°F8°C56°F13°C5 mph9 km/h from NorthDrizzleMostly Cloudy
July 1644°F7°C55°F13°C8 mph13 km/h from NorthwestDrizzleMostly Clear
July 1741°F5°C57°F14°C5 mph8 km/h from NorthMostly ClearPartly Cloudy
July 1844°F7°C55°F13°C16 mph26 km/h from NorthWindyDrizzle
July 1944°F7°C56°F13°C6 mph10 km/h from NorthwestPartly CloudyPartly Cloudy
July 2043°F6°C57°F14°C9 mph15 km/h from NorthMostly CloudyMostly Cloudy
July 2147°F8°C56°F14°C14 mph23 km/h from NorthDrizzleDrizzle

Yes

Low of 44°F7°C, High of 55°F13°C
Wind: 8 mph13 km/h
Precipitation: 66% rain

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