Yes
you do need a jacket based on the weather in Ottawa, ON, Canada 2 seconds ago
Why? Because it's cool. Pleasantly cool, but cool!
56°F13°C & Mostly Clear
Wind is 4 mph6 km/h from the Northwest, gusting to 12 mph20 km/h
| August 27 | ||||
| 2am | 55°F13°C | 4 mph6 km/h Northwest | Clear | |
| 3am | 54°F12°C | 4 mph6 km/h West | Clear | |
| 4am | 53°F12°C | 4 mph6 km/h West | Clear | |
| 5am | 52°F11°C | 4 mph6 km/h West | Mostly Clear | |
| 6am | 52°F11°C | 4 mph6 km/h West | Mostly Clear | |
| 7am | 52°F11°C | 4 mph6 km/h West | Mostly Clear | |
| 8am | 55°F13°C | 4 mph6 km/h Northwest | Mostly Clear | |
| 9am | 59°F15°C | 5 mph7 km/h Northwest | Mostly Clear | |
| 10am | 62°F17°C | 6 mph9 km/h Northwest | Mostly Clear | |
| 11am | 64°F18°C | 7 mph12 km/h Northwest | Partly Cloudy | |
| 12pm | 66°F19°C | 8 mph13 km/h West | Partly Cloudy | |
| 1pm | 68°F20°C | 8 mph13 km/h West | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| August 27 | 51°F11°C | 71°F22°C | 7 mph11 km/h from West | Partly Cloudy | Mostly Cloudy |
| August 28 | 54°F12°C | 65°F18°C | 7 mph11 km/h from Southwest | Rain | Rain |
| August 29 | 55°F13°C | 65°F18°C | 8 mph13 km/h from Northwest | Drizzle | Mostly Cloudy |
| August 30 | 53°F12°C | 68°F20°C | 6 mph9 km/h from Northwest | Partly Cloudy | Mostly Clear |
| August 31 | 54°F12°C | 72°F22°C | 3 mph5 km/h from Northwest | Mostly Clear | Mostly Clear |
| September 1 | 56°F14°C | 75°F24°C | 3 mph4 km/h from Southeast | Mostly Clear | Partly Cloudy |
| September 2 | 59°F15°C | 73°F23°C | 4 mph6 km/h from East | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 54°F12°C, High of 64°F18°CWind: 7 mph11 km/h
Precipitation: 67% rain