Yes
you do need a jacket based on the weather in Wanneroo, WA, Australia 1 second ago
Why? Because it's cool. Pleasantly cool, but cool!
57°F14°C & Mostly Clear
Wind is 4 mph6 km/h from the Northeast, gusting to 8 mph13 km/h
| September 1 | ||||
| 9pm | 58°F14°C | 4 mph6 km/h East | Mostly Clear | |
| 10pm | 62°F17°C | 4 mph6 km/h East | Mostly Clear | |
| 11pm | 65°F18°C | 4 mph6 km/h Southeast | Mostly Clear | |
| September 2 | ||||
| 12am | 66°F19°C | 4 mph6 km/h South | Mostly Clear | |
| 1am | 67°F19°C | 6 mph10 km/h South | Mostly Clear | |
| 2am | 67°F20°C | 8 mph14 km/h Southwest | Mostly Clear | |
| 3am | 66°F19°C | 10 mph15 km/h Southwest | Clear | |
| 4am | 66°F19°C | 10 mph16 km/h South | Clear | |
| 5am | 64°F18°C | 9 mph15 km/h South | Clear | |
| 6am | 61°F16°C | 9 mph14 km/h South | Clear | |
| 7am | 58°F15°C | 8 mph14 km/h South | Clear | |
| 8am | 57°F14°C | 8 mph13 km/h South | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 1 | 47°F9°C | 67°F20°C | 7 mph11 km/h from South | Mostly Clear | Clear |
| September 2 | 47°F8°C | 67°F20°C | 10 mph16 km/h from South | Mostly Clear | Partly Cloudy |
| September 3 | 52°F11°C | 65°F18°C | 9 mph15 km/h from Southwest | Mostly Clear | Drizzle |
| September 4 | 51°F11°C | 62°F17°C | 15 mph24 km/h from Northwest | Rain | Drizzle |
| September 5 | 51°F11°C | 60°F16°C | 21 mph33 km/h from Southwest | Rain | Drizzle |
| September 6 | 49°F9°C | 61°F16°C | 8 mph13 km/h from Southwest | Partly Cloudy | Drizzle |
| September 7 | 47°F8°C | 62°F17°C | 8 mph12 km/h from Southeast | Partly Cloudy | Partly Cloudy |
Yes
Low of 47°F9°C, High of 67°F20°CWind: 10 mph16 km/h
Precipitation: None