Yes

you do need a jacket based on the weather in St. Ives NSW 2075, Australia 1 second ago

Why? Because it's fairly windy outside!
65°F18°C & Mostly Clear

Wind is 9 mph14 km/h from the East, gusting to 19 mph31 km/h
October 18
9am64°F18°C8 mph12 km/h EastMostly Clear
10am63°F17°C7 mph11 km/h EastPartly Cloudy
11am62°F17°C6 mph10 km/h EastMostly Cloudy
12pm62°F17°C5 mph9 km/h EastMostly Cloudy
1pm61°F16°C5 mph8 km/h EastPartly Cloudy
2pm61°F16°C3 mph6 km/h EastPartly Cloudy
3pm60°F16°C2 mph3 km/h NortheastPartly Cloudy
4pm60°F15°C2 mph4 km/h NortheastPartly Cloudy
5pm59°F15°C2 mph3 km/h NorthMostly Clear
6pm59°F15°C2 mph4 km/h NorthwestPartly Cloudy
7pm59°F15°C2 mph4 km/h NorthwestMostly Clear
8pm60°F15°C3 mph4 km/h NorthwestMostly Clear
DateLowHighWindDayNight
October 1760°F16°C71°F22°C5 mph9 km/h from SoutheastPartly CloudyPartly Cloudy
October 1859°F15°C77°F25°C9 mph15 km/h from NortheastPartly CloudyPartly Cloudy
October 1961°F16°C93°F34°C4 mph7 km/h from NorthwestMostly ClearPartly Cloudy
October 2065°F18°C75°F24°C9 mph14 km/h from SoutheastPartly CloudyMostly Cloudy
October 2165°F18°C97°F36°C13 mph22 km/h from NorthwestMostly CloudyMostly Cloudy
October 2258°F14°C74°F23°C11 mph17 km/h from SouthPartly CloudyPartly Cloudy
October 2356°F13°C73°F23°C7 mph12 km/h from NortheastMostly ClearMostly Cloudy

No

Low of 59°F15°C, High of 77°F25°C
Wind: 9 mph15 km/h
Precipitation: None

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