Yes
you do need a jacket based on the weather in Williamstown VIC 3016, Australia 1 second ago
Why? Because it's cool. Pleasantly cool, but cool!
58°F14°C & Cloudy
Wind is 7 mph12 km/h from the Southwest, gusting to 19 mph30 km/h
| September 17 | ||||
| 4am | 57°F14°C | 8 mph12 km/h Southwest | Partly Cloudy | |
| 5am | 56°F13°C | 5 mph8 km/h Southwest | Mostly Clear | |
| 6am | 54°F12°C | 4 mph6 km/h Southwest | Partly Cloudy | |
| 7am | 52°F11°C | 3 mph5 km/h Northwest | Mostly Clear | |
| 8am | 50°F10°C | 3 mph4 km/h Northwest | Mostly Clear | |
| 9am | 48°F9°C | 3 mph5 km/h Northwest | Mostly Clear | |
| 10am | 47°F8°C | 4 mph6 km/h North | Mostly Clear | |
| 11am | 45°F7°C | 4 mph6 km/h North | Mostly Clear | |
| 12pm | 44°F6°C | 4 mph6 km/h North | Partly Cloudy | |
| 1pm | 43°F6°C | 4 mph7 km/h North | Mostly Clear | |
| 2pm | 42°F6°C | 5 mph7 km/h North | Mostly Clear | |
| 3pm | 43°F6°C | 5 mph8 km/h North | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 16 | 47°F8°C | 61°F16°C | 10 mph16 km/h from West | Partly Cloudy | Mostly Clear |
| September 17 | 42°F6°C | 69°F21°C | 13 mph20 km/h from North | Mostly Clear | Partly Cloudy |
| September 18 | 49°F10°C | 71°F21°C | 17 mph27 km/h from Northwest | Windy | Rain |
| September 19 | 44°F7°C | 57°F14°C | 13 mph21 km/h from West | Mostly Cloudy | Mostly Cloudy |
| September 20 | 49°F9°C | 66°F19°C | 11 mph18 km/h from Northwest | Drizzle | Drizzle |
| September 21 | 45°F7°C | 56°F13°C | 14 mph22 km/h from Southwest | Drizzle | Mostly Cloudy |
| September 22 | 44°F6°C | 61°F16°C | 10 mph16 km/h from West | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 42°F6°C, High of 69°F21°CWind: 13 mph20 km/h
Precipitation: None