No

you don't need a jacket based on the weather in Winston Hills NSW 2153, Australia 1 second ago

59°F15°C & Clear

Wind is 4 mph6 km/h from the Northeast, gusting to 10 mph16 km/h
June 1
5am59°F15°C4 mph6 km/h NortheastClear
6am57°F14°C3 mph5 km/h NortheastClear
7am56°F13°C3 mph5 km/h NorthClear
8am54°F12°C3 mph4 km/h NorthMostly Clear
9am54°F12°C3 mph5 km/h NorthMostly Cloudy
10am53°F12°C2 mph4 km/h NorthMostly Cloudy
11am52°F11°C3 mph4 km/h NorthwestMostly Cloudy
12pm52°F11°C2 mph4 km/h NorthwestCloudy
1pm50°F10°C2 mph3 km/h NorthCloudy
2pm50°F10°C2 mph3 km/h NorthwestCloudy
3pm50°F10°C2 mph3 km/h NorthwestCloudy
4pm49°F10°C2 mph3 km/h NorthwestCloudy
DateLowHighWindDayNight
May 3145°F7°C68°F20°C2 mph3 km/h from NorthClearMostly Cloudy
June 149°F10°C66°F19°C2 mph3 km/h from NorthwestCloudyMostly Cloudy
June 249°F10°C67°F20°C5 mph8 km/h from SouthMostly ClearDrizzle
June 345°F7°C58°F14°C9 mph15 km/h from SouthwestDrizzleClear
June 441°F5°C62°F17°C3 mph5 km/h from SouthwestClearPartly Cloudy
June 540°F4°C61°F16°C2 mph3 km/h from NorthwestMostly CloudyMostly Cloudy
June 646°F8°C65°F18°C4 mph7 km/h from NorthwestPartly CloudyClear

Yes

Low of 49°F10°C, High of 65°F19°C
Wind: 2 mph3 km/h
Precipitation: None

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