Yes

you do need a jacket based on the weather in Kalamunda WA 6076, Australia 1 second ago

Why? Because it's cool. Pleasantly cool, but cool!
59°F15°C & Cloudy

Wind is 6 mph9 km/h from the South, gusting to 12 mph19 km/h
November 7
9am58°F14°C5 mph8 km/h SouthMostly Cloudy
10am57°F14°C5 mph7 km/h SouthMostly Cloudy
11am56°F14°C4 mph7 km/h SouthMostly Cloudy
12pm56°F13°C4 mph7 km/h SoutheastCloudy
1pm57°F14°C4 mph7 km/h SouthCloudy
2pm56°F14°C6 mph10 km/h SoutheastCloudy
3pm55°F13°C7 mph11 km/h EastCloudy
4pm55°F13°C10 mph17 km/h EastRain
5pm55°F13°C10 mph16 km/h EastRain
6pm56°F14°C10 mph16 km/h EastCloudy
7pm59°F15°C9 mph15 km/h EastMostly Cloudy
8pm63°F17°C8 mph13 km/h EastMostly Cloudy
DateLowHighWindDayNight
November 646°F8°C73°F23°C10 mph15 km/h from SouthwestMostly ClearRain
November 755°F13°C69°F21°C7 mph12 km/h from SouthRainPartly Cloudy
November 853°F12°C73°F23°C7 mph12 km/h from SoutheastMostly CloudyClear
November 953°F12°C76°F25°C9 mph15 km/h from SouthMostly ClearClear
November 1054°F12°C79°F26°C8 mph13 km/h from SouthwestClearClear
November 1154°F12°C83°F28°C9 mph14 km/h from SouthwestClearMostly Clear
November 1260°F15°C85°F30°C9 mph15 km/h from SouthwestMostly ClearMostly Clear

Yes

Low of 55°F13°C, High of 70°F21°C
Wind: 7 mph12 km/h
Precipitation: 63% rain

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