No
you don't need a jacket based on the weather in Whitby, ON, Canada 1 second ago
70°F21°C & Cloudy
Wind is 4 mph6 km/h from the Southwest, gusting to 7 mph12 km/h
| September 11 | ||||
| 8pm | 67°F20°C | 3 mph5 km/h West | Mostly Clear | |
| 9pm | 66°F19°C | 4 mph7 km/h North | Mostly Clear | |
| 10pm | 64°F18°C | 5 mph8 km/h North | Mostly Clear | |
| 11pm | 63°F17°C | 8 mph12 km/h North | Mostly Clear | |
| September 12 | ||||
| 12am | 62°F17°C | 7 mph11 km/h Northeast | Mostly Clear | |
| 1am | 61°F16°C | 6 mph10 km/h Northeast | Mostly Clear | |
| 2am | 59°F15°C | 5 mph8 km/h Northeast | Mostly Clear | |
| 3am | 58°F15°C | 6 mph9 km/h Northeast | Mostly Clear | |
| 4am | 57°F14°C | 6 mph10 km/h Northeast | Mostly Clear | |
| 5am | 56°F13°C | 6 mph10 km/h Northeast | Mostly Clear | |
| 6am | 55°F13°C | 6 mph10 km/h Northeast | Mostly Clear | |
| 7am | 55°F13°C | 6 mph9 km/h Northeast | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 11 | 54°F12°C | 76°F24°C | 6 mph10 km/h from Northwest | Mostly Clear | Mostly Clear |
| September 12 | 55°F13°C | 71°F22°C | 5 mph9 km/h from Southeast | Mostly Clear | Mostly Cloudy |
| September 13 | 58°F15°C | 74°F24°C | 5 mph9 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
| September 14 | 61°F16°C | 75°F24°C | 4 mph7 km/h from East | Mostly Clear | Mostly Clear |
| September 15 | 59°F15°C | 74°F23°C | 6 mph10 km/h from Southeast | Mostly Clear | Mostly Clear |
| September 16 | 58°F15°C | 75°F24°C | 6 mph9 km/h from East | Mostly Clear | Clear |
| September 17 | 58°F14°C | 76°F24°C | 6 mph10 km/h from East | Mostly Clear | Partly Cloudy |
Yes
Low of 55°F13°C, High of 71°F22°CWind: 5 mph9 km/h
Precipitation: None