No
you don't need a jacket based on the weather in Ottawa, ON, Canada 1 second ago
70°F21°C & Cloudy
Wind is 1 mph2 km/h from the N, gusting to 4 mph6 km/h
| September 18 | ||||
| 10pm | 69°F20°C | 2 mph3 km/h N | Mostly Cloudy | |
| 11pm | 67°F20°C | 2 mph4 km/h N | Mostly Cloudy | |
| September 19 | ||||
| 12am | 66°F19°C | 3 mph4 km/h N | Mostly Cloudy | |
| 1am | 65°F18°C | 2 mph4 km/h N | Mostly Cloudy | |
| 2am | 64°F18°C | 3 mph4 km/h N | Mostly Cloudy | |
| 3am | 62°F17°C | 3 mph4 km/h N | Mostly Cloudy | |
| 4am | 62°F16°C | 3 mph4 km/h N | Mostly Cloudy | |
| 5am | 61°F16°C | 2 mph4 km/h N | Mostly Cloudy | |
| 6am | 60°F16°C | 3 mph4 km/h N | Partly Cloudy | |
| 7am | 60°F15°C | 3 mph5 km/h N | Partly Cloudy | |
| 8am | 61°F16°C | 3 mph5 km/h N | Partly Cloudy | |
| 9am | 66°F19°C | 3 mph4 km/h N | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 18 | 57°F14°C | 82°F28°C | 1 mph2 km/h from S | Mostly Cloudy | Mostly Cloudy |
| September 19 | 60°F15°C | 81°F27°C | 3 mph5 km/h from NE | Clear | Clear |
| September 20 | 59°F15°C | 79°F26°C | 5 mph9 km/h from E | Mostly Clear | Mostly Clear |
| September 21 | 58°F15°C | 75°F24°C | 7 mph12 km/h from E | Partly Cloudy | Partly Cloudy |
| September 22 | 56°F13°C | 72°F22°C | 8 mph13 km/h from E | Partly Cloudy | Mostly Cloudy |
| September 23 | 55°F13°C | 67°F19°C | 8 mph13 km/h from SE | Cloudy | Mostly Cloudy |
| September 24 | 55°F13°C | 65°F19°C | 7 mph11 km/h from E | Mostly Cloudy | Mostly Cloudy |
No
Low of 60°F16°C, High of 81°F27°CWind: 3 mph5 km/h
Precipitation: None