Yes
you do need a jacket based on the weather in Ottawa, ON, Canada 1 second ago
Why? Because it's pretty chilly.
54°F12°C & Clear
Wind is 5 mph8 km/h from the N, gusting to 11 mph18 km/h
| May 16 | ||||
| 4am | 53°F12°C | 5 mph8 km/h N | Partly Cloudy | |
| 5am | 53°F11°C | 5 mph8 km/h N | Partly Cloudy | |
| 6am | 52°F11°C | 5 mph8 km/h N | Mostly Clear | |
| 7am | 54°F12°C | 5 mph7 km/h N | Partly Cloudy | |
| 8am | 56°F14°C | 5 mph7 km/h NE | Partly Cloudy | |
| 9am | 59°F15°C | 5 mph8 km/h NE | Mostly Cloudy | |
| 10am | 61°F16°C | 5 mph9 km/h NE | Mostly Cloudy | |
| 11am | 64°F18°C | 5 mph8 km/h E | Partly Cloudy | |
| 12pm | 66°F19°C | 5 mph8 km/h E | Mostly Clear | |
| 1pm | 69°F20°C | 6 mph9 km/h E | Partly Cloudy | |
| 2pm | 70°F21°C | 6 mph9 km/h E | Mostly Clear | |
| 3pm | 71°F22°C | 6 mph10 km/h E | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| May 16 | 52°F11°C | 72°F22°C | 5 mph8 km/h from E | Partly Cloudy | Mostly Cloudy |
| May 17 | 55°F13°C | 73°F23°C | 6 mph9 km/h from SE | Drizzle | Drizzle |
| May 18 | 57°F14°C | 76°F25°C | 5 mph8 km/h from S | Partly Cloudy | Mostly Clear |
| May 19 | 57°F14°C | 80°F27°C | 5 mph8 km/h from S | Mostly Clear | Mostly Clear |
| May 20 | 59°F15°C | 80°F27°C | 6 mph10 km/h from SW | Partly Cloudy | Partly Cloudy |
| May 21 | 58°F15°C | 79°F26°C | 8 mph13 km/h from S | Mostly Cloudy | Drizzle |
| May 22 | 61°F16°C | 77°F25°C | 11 mph18 km/h from S | Rain | Rain |
Yes
Low of 55°F13°C, High of 73°F23°CWind: 6 mph9 km/h
Precipitation: 44% rain