Yes
you do need a jacket based on the weather in Markham (Buttonville), Ontario, Canada 1 second ago
Why? Because it's not very warm out!
55°F13°C & Mostly Clear
Wind is 4 mph6 km/h from the Northeast, gusting to 9 mph14 km/h
| September 15 | ||||
| 7am | 55°F13°C | 4 mph7 km/h Northeast | Mostly Clear | |
| 8am | 57°F14°C | 4 mph7 km/h East | Clear | |
| 9am | 60°F16°C | 5 mph8 km/h East | Mostly Clear | |
| 10am | 64°F18°C | 5 mph9 km/h Southeast | Partly Cloudy | |
| 11am | 68°F20°C | 6 mph9 km/h Southeast | Partly Cloudy | |
| 12pm | 70°F21°C | 5 mph8 km/h Southeast | Mostly Cloudy | |
| 1pm | 73°F23°C | 5 mph8 km/h Southeast | Mostly Cloudy | |
| 2pm | 75°F24°C | 5 mph8 km/h Southeast | Clear | |
| 3pm | 76°F25°C | 5 mph8 km/h Southeast | Clear | |
| 4pm | 77°F25°C | 5 mph8 km/h Southeast | Mostly Clear | |
| 5pm | 76°F25°C | 5 mph7 km/h East | Clear | |
| 6pm | 75°F24°C | 5 mph8 km/h Southeast | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 15 | 55°F13°C | 77°F25°C | 5 mph8 km/h from East | Mostly Clear | Clear |
| September 16 | 56°F13°C | 77°F25°C | 5 mph8 km/h from East | Mostly Clear | Mostly Clear |
| September 17 | 56°F13°C | 78°F25°C | 3 mph6 km/h from Southeast | Mostly Clear | Clear |
| September 18 | 58°F15°C | 79°F26°C | 5 mph8 km/h from Northwest | Mostly Clear | Mostly Clear |
| September 19 | 55°F13°C | 71°F22°C | 7 mph11 km/h from North | Mostly Clear | Clear |
| September 20 | 49°F9°C | 66°F19°C | 9 mph14 km/h from East | Mostly Clear | Mostly Clear |
| September 21 | 55°F13°C | 75°F24°C | 7 mph11 km/h from South | Partly Cloudy | Mostly Cloudy |
Yes
Low of 55°F13°C, High of 77°F25°CWind: 5 mph8 km/h
Precipitation: None