No
you don't need a jacket based on the weather in Ottawa (Orléans), Ontario, Canada 1 second ago
70°F21°C & Clear
Wind is 6 mph9 km/h from the East, gusting to 11 mph17 km/h
| August 15 | ||||
| 11am | 72°F22°C | 6 mph9 km/h Southeast | Clear | |
| 12pm | 75°F24°C | 5 mph9 km/h Southeast | Clear | |
| 1pm | 77°F25°C | 5 mph8 km/h Southeast | Clear | |
| 2pm | 79°F26°C | 4 mph7 km/h Southeast | Clear | |
| 3pm | 80°F27°C | 4 mph6 km/h Southeast | Clear | |
| 4pm | 81°F27°C | 3 mph5 km/h Southeast | Clear | |
| 5pm | 81°F27°C | 2 mph4 km/h Southeast | Clear | |
| 6pm | 80°F27°C | 2 mph3 km/h Southeast | Clear | |
| 7pm | 77°F25°C | 3 mph5 km/h Southeast | Clear | |
| 8pm | 73°F23°C | 4 mph6 km/h Southeast | Clear | |
| 9pm | 70°F21°C | 5 mph8 km/h Southeast | Clear | |
| 10pm | 67°F20°C | 5 mph7 km/h Southeast | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| August 15 | 53°F12°C | 81°F27°C | 4 mph6 km/h from Southeast | Clear | Clear |
| August 16 | 58°F15°C | 87°F30°C | 5 mph7 km/h from South | Mostly Clear | Partly Cloudy |
| August 17 | 58°F14°C | 72°F22°C | 8 mph14 km/h from North | Drizzle | Partly Cloudy |
| August 18 | 52°F11°C | 70°F21°C | 5 mph8 km/h from Northeast | Partly Cloudy | Partly Cloudy |
| August 19 | 52°F11°C | 74°F23°C | 6 mph10 km/h from East | Mostly Clear | Partly Cloudy |
| August 20 | 56°F13°C | 74°F23°C | 5 mph8 km/h from East | Mostly Cloudy | Mostly Clear |
| August 21 | 57°F14°C | 77°F25°C | 5 mph7 km/h from North | Mostly Clear | Mostly Clear |
Yes
Low of 58°F15°C, High of 87°F31°CWind: 5 mph7 km/h
Precipitation: None