No
you don't need a jacket based on the weather in Newmarket, ON, Canada 1 second ago
73°F23°C & Mostly Clear
Wind is 2 mph4 km/h from the South, gusting to 4 mph7 km/h
| September 17 | ||||
| 12pm | 74°F23°C | 2 mph4 km/h South | Mostly Clear | |
| 1pm | 76°F24°C | 2 mph3 km/h South | Partly Cloudy | |
| 2pm | 78°F25°C | 2 mph3 km/h South | Partly Cloudy | |
| 3pm | 78°F26°C | 2 mph3 km/h Southeast | Partly Cloudy | |
| 4pm | 79°F26°C | 2 mph3 km/h Southeast | Mostly Clear | |
| 5pm | 79°F26°C | 1 mph2 km/h East | Mostly Clear | |
| 6pm | 77°F25°C | 1 mph2 km/h Southeast | Mostly Clear | |
| 7pm | 72°F22°C | 3 mph5 km/h Southeast | Mostly Clear | |
| 8pm | 67°F20°C | 4 mph6 km/h Southeast | Clear | |
| 9pm | 64°F18°C | 3 mph5 km/h South | Clear | |
| 10pm | 62°F17°C | 3 mph4 km/h South | Clear | |
| 11pm | 61°F16°C | 2 mph4 km/h Southwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 49°F10°C | 79°F26°C | 2 mph3 km/h from South | Mostly Clear | Clear |
| September 18 | 52°F11°C | 79°F26°C | 7 mph11 km/h from Northwest | Mostly Clear | Mostly Clear |
| September 19 | 49°F10°C | 68°F20°C | 8 mph12 km/h from North | Clear | Clear |
| September 20 | 44°F6°C | 68°F20°C | 8 mph12 km/h from Southeast | Mostly Clear | Mostly Clear |
| September 21 | 50°F10°C | 78°F25°C | 10 mph17 km/h from South | Mostly Clear | Mostly Cloudy |
| September 22 | 62°F17°C | 79°F26°C | 9 mph15 km/h from South | Rain | Rain |
| September 23 | 61°F16°C | 75°F24°C | 8 mph12 km/h from South | Rain | Drizzle |
Yes
Low of 53°F12°C, High of 79°F26°CWind: 7 mph11 km/h
Precipitation: None