No
you don't need a jacket based on the weather in Hamilton (Ancaster), Ontario, Canada 5 minutes ago
75°F24°C & Cloudy
Wind is 6 mph9 km/h from the West, gusting to 10 mph16 km/h
| September 18 | ||||
| 12pm | 76°F25°C | 5 mph8 km/h Northwest | Partly Cloudy | |
| 1pm | 78°F26°C | 6 mph9 km/h Northwest | Partly Cloudy | |
| 2pm | 81°F27°C | 7 mph11 km/h Northwest | Mostly Clear | |
| 3pm | 82°F28°C | 8 mph13 km/h Northwest | Mostly Clear | |
| 4pm | 81°F27°C | 9 mph14 km/h Northwest | Partly Cloudy | |
| 5pm | 80°F27°C | 9 mph14 km/h Northwest | Mostly Clear | |
| 6pm | 79°F26°C | 9 mph14 km/h Northwest | Mostly Clear | |
| 7pm | 75°F24°C | 6 mph10 km/h Northwest | Clear | |
| 8pm | 72°F22°C | 6 mph9 km/h Northwest | Clear | |
| 9pm | 69°F21°C | 5 mph9 km/h North | Clear | |
| 10pm | 67°F20°C | 5 mph8 km/h North | Clear | |
| 11pm | 65°F18°C | 5 mph9 km/h North | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 18 | 51°F11°C | 82°F28°C | 6 mph10 km/h from Northwest | Mostly Clear | Clear |
| September 19 | 55°F13°C | 70°F21°C | 6 mph10 km/h from Northeast | Mostly Clear | Mostly Clear |
| September 20 | 52°F11°C | 67°F19°C | 12 mph20 km/h from East | Mostly Clear | Mostly Cloudy |
| September 21 | 53°F12°C | 79°F26°C | 8 mph12 km/h from Southeast | Partly Cloudy | Rain |
| September 22 | 64°F18°C | 75°F24°C | 10 mph17 km/h from Southwest | Rain | Drizzle |
| September 23 | 62°F17°C | 76°F25°C | 6 mph10 km/h from West | Drizzle | Partly Cloudy |
| September 24 | 58°F15°C | 71°F22°C | 7 mph12 km/h from Northeast | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 55°F13°C, High of 71°F22°CWind: 6 mph10 km/h
Precipitation: None