Yes
you do need a jacket based on the weather in Markham, ON, Canada 1 second ago
Why? Because it's cool. Pleasantly cool, but cool!
58°F14°C & Clear
Wind is 4 mph7 km/h from the North, gusting to 7 mph12 km/h
| September 12 | ||||
| 2am | 57°F14°C | 4 mph6 km/h North | Clear | |
| 3am | 56°F13°C | 4 mph6 km/h Northeast | Mostly Clear | |
| 4am | 55°F13°C | 4 mph7 km/h Northeast | Mostly Clear | |
| 5am | 54°F12°C | 4 mph7 km/h Northeast | Mostly Clear | |
| 6am | 53°F12°C | 4 mph7 km/h Northeast | Mostly Clear | |
| 7am | 53°F12°C | 4 mph7 km/h Northeast | Mostly Clear | |
| 8am | 55°F13°C | 4 mph7 km/h East | Mostly Clear | |
| 9am | 59°F15°C | 4 mph7 km/h East | Partly Cloudy | |
| 10am | 63°F17°C | 4 mph6 km/h East | Partly Cloudy | |
| 11am | 66°F19°C | 4 mph6 km/h Southeast | Partly Cloudy | |
| 12pm | 69°F20°C | 4 mph6 km/h Southeast | Partly Cloudy | |
| 1pm | 71°F21°C | 4 mph6 km/h Southeast | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 12 | 53°F12°C | 73°F23°C | 4 mph7 km/h from Southeast | Partly Cloudy | Mostly Cloudy |
| September 13 | 59°F15°C | 76°F25°C | 4 mph7 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
| September 14 | 61°F16°C | 77°F25°C | 3 mph5 km/h from Northeast | Partly Cloudy | Mostly Clear |
| September 15 | 58°F14°C | 75°F24°C | 5 mph9 km/h from Southeast | Mostly Clear | Mostly Clear |
| September 16 | 58°F14°C | 76°F25°C | 5 mph8 km/h from East | Mostly Clear | Clear |
| September 17 | 56°F13°C | 77°F25°C | 5 mph7 km/h from East | Clear | Partly Cloudy |
| September 18 | 59°F15°C | 78°F25°C | 5 mph8 km/h from Southeast | Partly Cloudy | Partly Cloudy |
No
Low of 59°F15°C, High of 76°F25°CWind: 4 mph7 km/h
Precipitation: 11% rain