Yes
you do need a jacket based on the weather in Markham (Buttonville), Ontario, Canada 1 second ago
Why? Because it's cool. Pleasantly cool, but cool!
51°F11°C & Clear
Wind is 2 mph4 km/h from the W, gusting to 7 mph11 km/h
| October 17 | ||||
| 12pm | 53°F12°C | 3 mph5 km/h W | Clear | |
| 1pm | 56°F13°C | 3 mph5 km/h SW | Clear | |
| 2pm | 57°F14°C | 4 mph6 km/h SW | Clear | |
| 3pm | 58°F15°C | 5 mph8 km/h SW | Clear | |
| 4pm | 59°F15°C | 6 mph9 km/h SW | Clear | |
| 5pm | 58°F14°C | 6 mph10 km/h SW | Clear | |
| 6pm | 55°F13°C | 5 mph7 km/h S | Clear | |
| 7pm | 51°F11°C | 4 mph7 km/h S | Clear | |
| 8pm | 49°F10°C | 4 mph6 km/h SW | Clear | |
| 9pm | 48°F9°C | 4 mph6 km/h W | Clear | |
| 10pm | 46°F8°C | 4 mph7 km/h W | Clear | |
| 11pm | 45°F7°C | 5 mph7 km/h NW | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| October 17 | 31°F-0°C | 59°F15°C | 3 mph6 km/h from SW | Clear | Clear |
| October 18 | 36°F2°C | 63°F17°C | 4 mph6 km/h from SW | Clear | Clear |
| October 19 | 40°F5°C | 66°F19°C | 5 mph7 km/h from SW | Clear | Mostly Clear |
| October 20 | 43°F6°C | 69°F21°C | 7 mph11 km/h from SW | Mostly Clear | Clear |
| October 21 | 50°F10°C | 72°F22°C | 5 mph8 km/h from SW | Mostly Clear | Mostly Clear |
| October 22 | 50°F10°C | 69°F21°C | 6 mph9 km/h from S | Mostly Clear | Mostly Cloudy |
| October 23 | 47°F9°C | 66°F19°C | 10 mph17 km/h from SW | Mostly Cloudy | Partly Cloudy |
Yes
Low of 36°F2°C, High of 64°F18°CWind: 4 mph6 km/h
Precipitation: None