No
you don't need a jacket based on the weather in Ottawa, ON, Canada 2 minutes ago
77°F25°C & Clear
Wind is 2 mph4 km/h from the East, gusting to 6 mph10 km/h
| September 16 | ||||
| 4pm | 77°F25°C | 3 mph5 km/h East | Clear | |
| 5pm | 77°F25°C | 4 mph6 km/h East | Clear | |
| 6pm | 75°F24°C | 3 mph5 km/h East | Clear | |
| 7pm | 71°F22°C | 4 mph6 km/h Southeast | Clear | |
| 8pm | 67°F20°C | 4 mph6 km/h Southeast | Clear | |
| 9pm | 65°F18°C | 3 mph5 km/h Southeast | Clear | |
| 10pm | 62°F17°C | 3 mph5 km/h East | Clear | |
| 11pm | 61°F16°C | 3 mph4 km/h Northeast | Clear | |
| September 17 | ||||
| 12am | 59°F15°C | 3 mph4 km/h Northeast | Mostly Clear | |
| 1am | 58°F14°C | 3 mph4 km/h Northeast | Mostly Clear | |
| 2am | 57°F14°C | 3 mph4 km/h Northeast | Partly Cloudy | |
| 3am | 56°F13°C | 3 mph4 km/h Northeast | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 16 | 50°F10°C | 77°F25°C | 2 mph3 km/h from East | Mostly Clear | Mostly Clear |
| September 17 | 54°F12°C | 77°F25°C | 2 mph3 km/h from Southwest | Mostly Cloudy | Partly Cloudy |
| September 18 | 57°F14°C | 76°F25°C | 7 mph10 km/h from West | Mostly Clear | Partly Cloudy |
| September 19 | 48°F9°C | 64°F18°C | 8 mph13 km/h from Northwest | Clear | Clear |
| September 20 | 42°F5°C | 62°F16°C | 3 mph4 km/h from North | Clear | Mostly Clear |
| September 21 | 43°F6°C | 74°F24°C | 5 mph9 km/h from South | Mostly Clear | Thunderstorms |
| September 22 | 59°F15°C | 75°F24°C | 8 mph13 km/h from Southwest | Drizzle | Thunderstorms |
Yes
Low of 55°F13°C, High of 77°F25°CWind: 2 mph3 km/h
Precipitation: None