No
you don't need a jacket based on the weather in Ottawa (Orléans), Ontario, Canada 1 second ago
70°F21°C & Clear
Wind is 2 mph3 km/h from the South, gusting to 4 mph6 km/h
| September 10 | ||||
| 8pm | 67°F19°C | 1 mph2 km/h North | Mostly Clear | |
| 9pm | 64°F18°C | 3 mph5 km/h East | Mostly Clear | |
| 10pm | 62°F16°C | 3 mph4 km/h East | Partly Cloudy | |
| 11pm | 60°F15°C | 2 mph3 km/h Northwest | Partly Cloudy | |
| September 11 | ||||
| 12am | 58°F15°C | 1 mph2 km/h Northwest | Mostly Clear | |
| 1am | 57°F14°C | 2 mph3 km/h Northwest | Mostly Clear | |
| 2am | 55°F13°C | 2 mph4 km/h Northwest | Partly Cloudy | |
| 3am | 54°F12°C | 3 mph4 km/h Northwest | Partly Cloudy | |
| 4am | 53°F12°C | 3 mph5 km/h Northwest | Partly Cloudy | |
| 5am | 53°F12°C | 4 mph6 km/h Northwest | Partly Cloudy | |
| 6am | 54°F12°C | 4 mph7 km/h Northwest | Mostly Cloudy | |
| 7am | 55°F13°C | 5 mph8 km/h Northwest | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 10 | 45°F7°C | 76°F25°C | 2 mph4 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| September 11 | 52°F11°C | 73°F23°C | 7 mph11 km/h from North | Mostly Clear | Clear |
| September 12 | 46°F8°C | 69°F21°C | 2 mph4 km/h from East | Partly Cloudy | Mostly Cloudy |
| September 13 | 49°F9°C | 71°F22°C | 3 mph5 km/h from South | Drizzle | Thunderstorms |
| September 14 | 55°F13°C | 68°F20°C | 6 mph10 km/h from North | Thunderstorms | Mostly Clear |
| September 15 | 50°F10°C | 71°F22°C | 4 mph7 km/h from East | Partly Cloudy | Mostly Clear |
| September 16 | 51°F11°C | 76°F24°C | 3 mph5 km/h from West | Mostly Clear | Mostly Clear |
Yes
Low of 53°F12°C, High of 73°F23°CWind: 7 mph11 km/h
Precipitation: None