No
you don't need a jacket based on the weather in Ajax, ON L1T 2M9, Canada 1 second ago
63°F17°C & Mostly Clear
Wind is 2 mph4 km/h from the North, gusting to 3 mph5 km/h
| September 18 | ||||
| 12am | 62°F16°C | 3 mph5 km/h North | Mostly Clear | |
| 1am | 60°F16°C | 4 mph7 km/h North | Clear | |
| 2am | 59°F15°C | 4 mph6 km/h North | Clear | |
| 3am | 58°F15°C | 4 mph6 km/h North | Mostly Clear | |
| 4am | 58°F14°C | 4 mph6 km/h Northwest | Mostly Clear | |
| 5am | 57°F14°C | 3 mph5 km/h Northwest | Mostly Clear | |
| 6am | 57°F14°C | 4 mph6 km/h Northwest | Mostly Clear | |
| 7am | 56°F14°C | 4 mph6 km/h Northwest | Mostly Clear | |
| 8am | 59°F15°C | 4 mph7 km/h Northwest | Partly Cloudy | |
| 9am | 64°F18°C | 3 mph5 km/h Northwest | Partly Cloudy | |
| 10am | 69°F21°C | 2 mph4 km/h Northwest | Mostly Clear | |
| 11am | 73°F23°C | 3 mph5 km/h Northwest | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 52°F11°C | 75°F24°C | 5 mph8 km/h from Southeast | Mostly Clear | Mostly Clear |
| September 18 | 56°F14°C | 79°F26°C | 5 mph7 km/h from West | Partly Cloudy | Mostly Clear |
| September 19 | 55°F13°C | 70°F21°C | 6 mph10 km/h from North | Clear | Clear |
| September 20 | 49°F9°C | 65°F18°C | 10 mph16 km/h from East | Mostly Clear | Partly Cloudy |
| September 21 | 56°F13°C | 73°F23°C | 8 mph13 km/h from Southeast | Partly Cloudy | Cloudy |
| September 22 | 65°F18°C | 74°F23°C | 7 mph10 km/h from South | Drizzle | Rain |
| September 23 | 64°F18°C | 73°F23°C | 5 mph8 km/h from Southwest | Drizzle | Rain |
Yes
Low of 56°F14°C, High of 79°F26°CWind: 5 mph7 km/h
Precipitation: 47% rain