Yes
you do need a jacket based on the weather in Ajax, ON, Canada 1 second ago
Why? Because it's pretty chilly!
56°F13°C & Mostly Clear
Wind is 4 mph7 km/h from the West, gusting to 10 mph16 km/h
| May 9 | ||||
| 7pm | 56°F13°C | 4 mph7 km/h West | Partly Cloudy | |
| 8pm | 55°F13°C | 4 mph7 km/h Northwest | Clear | |
| 9pm | 52°F11°C | 5 mph9 km/h Northwest | Clear | |
| 10pm | 50°F10°C | 7 mph12 km/h Northwest | Clear | |
| 11pm | 48°F9°C | 6 mph10 km/h Northwest | Clear | |
| May 10 | ||||
| 12am | 46°F8°C | 7 mph12 km/h North | Clear | |
| 1am | 45°F7°C | 8 mph13 km/h North | Clear | |
| 2am | 45°F7°C | 9 mph15 km/h Northwest | Clear | |
| 3am | 44°F7°C | 9 mph14 km/h Northwest | Clear | |
| 4am | 43°F6°C | 8 mph13 km/h Northwest | Clear | |
| 5am | 43°F6°C | 8 mph12 km/h Northwest | Mostly Clear | |
| 6am | 43°F6°C | 7 mph11 km/h Northwest | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| May 9 | 39°F4°C | 56°F13°C | 7 mph11 km/h from South | Mostly Clear | Clear |
| May 10 | 42°F6°C | 66°F19°C | 7 mph11 km/h from West | Mostly Clear | Clear |
| May 11 | 41°F5°C | 57°F14°C | 6 mph9 km/h from Southeast | Clear | Clear |
| May 12 | 43°F6°C | 66°F19°C | 4 mph6 km/h from South | Mostly Clear | Mostly Cloudy |
| May 13 | 53°F12°C | 64°F18°C | 7 mph12 km/h from East | Drizzle | Drizzle |
| May 14 | 55°F13°C | 64°F18°C | 8 mph13 km/h from East | Drizzle | Mostly Cloudy |
| May 15 | 55°F13°C | 68°F20°C | 5 mph8 km/h from East | Partly Cloudy | Partly Cloudy |
Yes
Low of 43°F6°C, High of 65°F19°CWind: 7 mph11 km/h
Precipitation: None