No
you don't need a jacket based on the weather in Ottawa, ON, Canada 4 minutes ago
65°F18°C & Mostly Clear
Wind is 3 mph5 km/h from the East, gusting to 5 mph8 km/h
| September 10 | ||||
| 10pm | 63°F17°C | 2 mph3 km/h Northeast | Mostly Clear | |
| 11pm | 61°F16°C | 2 mph3 km/h North | Mostly Clear | |
| September 11 | ||||
| 12am | 60°F15°C | 2 mph3 km/h Northeast | Mostly Clear | |
| 1am | 58°F15°C | 1 mph2 km/h Northwest | Mostly Clear | |
| 2am | 57°F14°C | 1 mph2 km/h Northwest | Mostly Cloudy | |
| 3am | 56°F14°C | 3 mph4 km/h Northwest | Partly Cloudy | |
| 4am | 56°F13°C | 3 mph5 km/h Northwest | Partly Cloudy | |
| 5am | 55°F13°C | 3 mph5 km/h Northwest | Partly Cloudy | |
| 6am | 55°F13°C | 4 mph6 km/h Northwest | Mostly Cloudy | |
| 7am | 56°F13°C | 4 mph6 km/h North | Mostly Cloudy | |
| 8am | 58°F14°C | 4 mph6 km/h North | Partly Cloudy | |
| 9am | 61°F16°C | 5 mph9 km/h North | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 10 | 47°F8°C | 77°F25°C | 2 mph2 km/h from Southeast | Partly Cloudy | Partly Cloudy |
| September 11 | 54°F12°C | 72°F22°C | 7 mph11 km/h from North | Mostly Clear | Clear |
| September 12 | 48°F9°C | 69°F21°C | 2 mph4 km/h from East | Partly Cloudy | Mostly Cloudy |
| September 13 | 52°F11°C | 71°F22°C | 4 mph6 km/h from Southwest | Drizzle | Thunderstorms |
| September 14 | 56°F14°C | 69°F21°C | 6 mph10 km/h from North | Partly Cloudy | Mostly Clear |
| September 15 | 52°F11°C | 71°F22°C | 4 mph7 km/h from East | Partly Cloudy | Mostly Clear |
| September 16 | 53°F12°C | 76°F24°C | 3 mph5 km/h from West | Mostly Clear | Mostly Clear |
Yes
Low of 54°F12°C, High of 72°F22°CWind: 7 mph11 km/h
Precipitation: None