No
you don't need a jacket based on the weather in Ottawa, ON, Canada 4 minutes ago
76°F25°C & Cloudy
Wind is 2 mph4 km/h from the South, gusting to 7 mph11 km/h
| September 17 | ||||
| 4pm | 77°F25°C | 3 mph5 km/h South | Cloudy | |
| 5pm | 76°F25°C | 3 mph5 km/h Southeast | Cloudy | |
| 6pm | 75°F24°C | 3 mph4 km/h Southeast | Cloudy | |
| 7pm | 72°F22°C | 3 mph4 km/h Southeast | Cloudy | |
| 8pm | 69°F21°C | 3 mph5 km/h Southeast | Mostly Cloudy | |
| 9pm | 67°F20°C | 3 mph4 km/h South | Mostly Cloudy | |
| 10pm | 65°F19°C | 3 mph5 km/h South | Mostly Cloudy | |
| 11pm | 64°F18°C | 2 mph4 km/h Southwest | Partly Cloudy | |
| September 18 | ||||
| 12am | 63°F17°C | 3 mph5 km/h Southwest | Partly Cloudy | |
| 1am | 62°F17°C | 4 mph6 km/h Southwest | Partly Cloudy | |
| 2am | 61°F16°C | 4 mph6 km/h Southwest | Mostly Clear | |
| 3am | 60°F15°C | 4 mph6 km/h Southwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 52°F11°C | 77°F25°C | 2 mph3 km/h from Southeast | Mostly Cloudy | Partly Cloudy |
| September 18 | 57°F14°C | 75°F24°C | 7 mph11 km/h from West | Partly Cloudy | Mostly Clear |
| September 19 | 48°F9°C | 65°F18°C | 7 mph12 km/h from Northwest | Clear | Clear |
| September 20 | 42°F6°C | 64°F18°C | 3 mph4 km/h from North | Clear | Mostly Clear |
| September 21 | 43°F6°C | 74°F23°C | 5 mph9 km/h from Southeast | Partly Cloudy | Partly Cloudy |
| September 22 | 56°F14°C | 75°F24°C | 6 mph10 km/h from South | Rain | Rain |
| September 23 | 61°F16°C | 73°F23°C | 5 mph8 km/h from Southwest | Drizzle | Mostly Cloudy |
Yes
Low of 56°F14°C, High of 75°F24°CWind: 7 mph11 km/h
Precipitation: 15% rain