No
you don't need a jacket based on the weather in Ontario, Canada 1 second ago
66°F19°C & Partly Cloudy
Wind is 7 mph12 km/h from the Southwest, gusting to 17 mph28 km/h
| September 17 | ||||
| 5am | 65°F18°C | 7 mph12 km/h Southwest | Mostly Cloudy | |
| 6am | 65°F18°C | 7 mph12 km/h West | Partly Cloudy | |
| 7am | 64°F18°C | 7 mph12 km/h West | Mostly Clear | |
| 8am | 64°F18°C | 8 mph12 km/h West | Mostly Clear | |
| 9am | 66°F19°C | 9 mph14 km/h West | Partly Cloudy | |
| 10am | 67°F20°C | 10 mph16 km/h West | Cloudy | |
| 11am | 66°F19°C | 10 mph16 km/h Northwest | Cloudy | |
| 12pm | 65°F19°C | 10 mph17 km/h Northwest | Cloudy | |
| 1pm | 64°F18°C | 10 mph16 km/h Northwest | Drizzle | |
| 2pm | 64°F18°C | 10 mph16 km/h Northwest | Cloudy | |
| 3pm | 64°F18°C | 10 mph16 km/h Northwest | Cloudy | |
| 4pm | 63°F17°C | 10 mph17 km/h Northwest | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 53°F11°C | 71°F22°C | 10 mph16 km/h from Northwest | Drizzle | Mostly Cloudy |
| September 18 | 45°F7°C | 58°F14°C | 7 mph10 km/h from North | Mostly Cloudy | Partly Cloudy |
| September 19 | 40°F5°C | 61°F16°C | 3 mph5 km/h from North | Mostly Clear | Mostly Clear |
| September 20 | 43°F6°C | 66°F19°C | 8 mph13 km/h from South | Mostly Cloudy | Drizzle |
| September 21 | 53°F11°C | 69°F21°C | 6 mph10 km/h from Southwest | Drizzle | Mostly Cloudy |
| September 22 | 55°F13°C | 71°F22°C | 4 mph7 km/h from South | Mostly Cloudy | Partly Cloudy |
| September 23 | 56°F13°C | 69°F20°C | 6 mph10 km/h from South | Thunderstorms | Mostly Cloudy |
Yes
Low of 45°F7°C, High of 58°F15°CWind: 7 mph10 km/h
Precipitation: None