No
you don't need a jacket based on the weather in Ottawa, ON, Canada 2 minutes ago
63°F17°C & Partly Cloudy
Wind is 1 mph2 km/h from the Southeast, gusting to 4 mph6 km/h
| September 12 | ||||
| 1pm | 66°F19°C | 2 mph3 km/h Southeast | Mostly Clear | |
| 2pm | 67°F20°C | 2 mph3 km/h Southeast | Mostly Clear | |
| 3pm | 68°F20°C | 2 mph3 km/h South | Mostly Cloudy | |
| 4pm | 69°F20°C | 3 mph4 km/h South | Mostly Cloudy | |
| 5pm | 68°F20°C | 3 mph4 km/h Southwest | Cloudy | |
| 6pm | 67°F19°C | 2 mph4 km/h South | Cloudy | |
| 7pm | 64°F18°C | 2 mph3 km/h Northwest | Cloudy | |
| 8pm | 62°F16°C | 2 mph3 km/h East | Cloudy | |
| 9pm | 60°F15°C | 2 mph3 km/h East | Cloudy | |
| 10pm | 58°F14°C | 1 mph2 km/h Northeast | Mostly Cloudy | |
| 11pm | 57°F14°C | 1 mph2 km/h Northeast | Mostly Cloudy | |
| September 13 | ||||
| 12am | 56°F13°C | 1 mph2 km/h Northeast | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 12 | 45°F7°C | 69°F20°C | 2 mph3 km/h from Southeast | Partly Cloudy | Cloudy |
| September 13 | 53°F11°C | 73°F23°C | 3 mph6 km/h from Southwest | Partly Cloudy | Mostly Clear |
| September 14 | 55°F13°C | 74°F23°C | 6 mph9 km/h from Northwest | Mostly Clear | Mostly Clear |
| September 15 | 52°F11°C | 75°F24°C | 3 mph4 km/h from Northeast | Mostly Clear | Mostly Clear |
| September 16 | 53°F11°C | 78°F25°C | 2 mph4 km/h from Northwest | Clear | Mostly Clear |
| September 17 | 55°F13°C | 80°F26°C | 2 mph3 km/h from Southwest | Mostly Clear | Clear |
| September 18 | 57°F14°C | 80°F27°C | 5 mph7 km/h from West | Mostly Clear | Mostly Clear |
Yes
Low of 53°F12°C, High of 73°F23°CWind: 3 mph6 km/h
Precipitation: None