No
you don't need a jacket based on the weather in Hamilton (Waterdown), Ontario, Canada 1 second ago
61°F16°C & Mostly Cloudy
Wind is 6 mph9 km/h from the Northwest, gusting to 9 mph14 km/h
| September 11 | ||||
| 12am | 61°F16°C | 6 mph10 km/h North | Partly Cloudy | |
| 1am | 60°F15°C | 6 mph9 km/h North | Mostly Clear | |
| 2am | 59°F15°C | 5 mph8 km/h North | Mostly Clear | |
| 3am | 58°F14°C | 5 mph8 km/h North | Mostly Clear | |
| 4am | 57°F14°C | 5 mph8 km/h North | Clear | |
| 5am | 56°F13°C | 5 mph7 km/h North | Clear | |
| 6am | 55°F13°C | 5 mph8 km/h North | Clear | |
| 7am | 54°F12°C | 5 mph8 km/h North | Clear | |
| 8am | 57°F14°C | 5 mph8 km/h North | Clear | |
| 9am | 61°F16°C | 5 mph8 km/h North | Clear | |
| 10am | 66°F19°C | 5 mph8 km/h Northeast | Clear | |
| 11am | 69°F21°C | 5 mph8 km/h Northeast | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 10 | 54°F12°C | 75°F24°C | 3 mph4 km/h from Southeast | Partly Cloudy | Mostly Clear |
| September 11 | 54°F12°C | 75°F24°C | 5 mph8 km/h from Northeast | Clear | Mostly Clear |
| September 12 | 56°F13°C | 74°F23°C | 4 mph6 km/h from East | Mostly Clear | Partly Cloudy |
| September 13 | 57°F14°C | 77°F25°C | 6 mph10 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
| September 14 | 60°F15°C | 74°F24°C | 4 mph6 km/h from Northeast | Partly Cloudy | Mostly Clear |
| September 15 | 56°F13°C | 71°F22°C | 7 mph11 km/h from Northeast | Mostly Clear | Clear |
| September 16 | 56°F13°C | 73°F23°C | 5 mph8 km/h from East | Clear | Clear |
Yes
Low of 55°F13°C, High of 75°F24°CWind: 5 mph8 km/h
Precipitation: None