No
you don't need a jacket based on the weather in Hamilton, ON, Canada 2 minutes ago
67°F19°C & Mostly Clear
Wind is 5 mph8 km/h from the Northeast, gusting to 8 mph13 km/h
| September 17 | ||||
| 11am | 69°F20°C | 5 mph9 km/h Northeast | Mostly Clear | |
| 12pm | 71°F22°C | 5 mph8 km/h Northeast | Mostly Clear | |
| 1pm | 73°F23°C | 6 mph9 km/h Northeast | Clear | |
| 2pm | 75°F24°C | 6 mph10 km/h Northeast | Clear | |
| 3pm | 76°F24°C | 6 mph10 km/h Northeast | Clear | |
| 4pm | 76°F25°C | 6 mph10 km/h East | Clear | |
| 5pm | 75°F24°C | 6 mph9 km/h East | Clear | |
| 6pm | 74°F23°C | 5 mph8 km/h East | Clear | |
| 7pm | 71°F22°C | 4 mph6 km/h East | Clear | |
| 8pm | 68°F20°C | 3 mph4 km/h East | Clear | |
| 9pm | 66°F19°C | 1 mph2 km/h Northeast | Clear | |
| 10pm | 65°F18°C | 2 mph3 km/h Northwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 57°F14°C | 76°F25°C | 5 mph8 km/h from Northeast | Clear | Clear |
| September 18 | 55°F13°C | 83°F28°C | 5 mph8 km/h from Northwest | Mostly Clear | Clear |
| September 19 | 55°F13°C | 71°F22°C | 7 mph11 km/h from Northeast | Mostly Clear | Clear |
| September 20 | 54°F12°C | 66°F19°C | 12 mph19 km/h from East | Mostly Clear | Mostly Clear |
| September 21 | 54°F12°C | 79°F26°C | 7 mph12 km/h from South | Mostly Clear | Mostly Cloudy |
| September 22 | 66°F19°C | 77°F25°C | 10 mph17 km/h from Southwest | Rain | Rain |
| September 23 | 64°F18°C | 77°F25°C | 8 mph13 km/h from Southwest | Drizzle | Mostly Cloudy |
Yes
Low of 55°F13°C, High of 82°F28°CWind: 5 mph8 km/h
Precipitation: 45% rain