No
you don't need a jacket based on the weather in Ottawa (Orléans), Ontario, Canada 1 second ago
73°F23°C & Clear
Wind is 2 mph4 km/h from the East, gusting to 4 mph7 km/h
| September 15 | ||||
| 6pm | 72°F22°C | 3 mph4 km/h East | Clear | |
| 7pm | 68°F20°C | 3 mph4 km/h Southeast | Clear | |
| 8pm | 64°F18°C | 3 mph5 km/h Southeast | Clear | |
| 9pm | 61°F16°C | 3 mph5 km/h Southeast | Clear | |
| 10pm | 60°F15°C | 2 mph3 km/h Northeast | Clear | |
| 11pm | 58°F15°C | 2 mph3 km/h North | Clear | |
| September 16 | ||||
| 12am | 57°F14°C | 3 mph5 km/h Northeast | Clear | |
| 1am | 55°F13°C | 3 mph5 km/h Northeast | Mostly Clear | |
| 2am | 54°F12°C | 3 mph4 km/h Northeast | Mostly Clear | |
| 3am | 53°F11°C | 3 mph5 km/h Northeast | Mostly Clear | |
| 4am | 52°F11°C | 3 mph5 km/h Northeast | Mostly Clear | |
| 5am | 51°F11°C | 3 mph5 km/h Northeast | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 15 | 48°F9°C | 74°F23°C | 3 mph5 km/h from East | Clear | Clear |
| September 16 | 51°F10°C | 78°F25°C | 3 mph5 km/h from East | Clear | Mostly Clear |
| September 17 | 53°F11°C | 78°F26°C | 2 mph4 km/h from Southwest | Mostly Cloudy | Partly Cloudy |
| September 18 | 56°F13°C | 77°F25°C | 6 mph10 km/h from West | Mostly Clear | Mostly Clear |
| September 19 | 47°F8°C | 66°F19°C | 8 mph12 km/h from Northwest | Clear | Clear |
| September 20 | 42°F6°C | 67°F19°C | 4 mph6 km/h from Northeast | Mostly Clear | Mostly Clear |
| September 21 | 44°F7°C | 76°F25°C | 6 mph9 km/h from South | Partly Cloudy | Mostly Cloudy |
Yes
Low of 51°F11°C, High of 78°F26°CWind: 3 mph5 km/h
Precipitation: None