No
you don't need a jacket based on the weather in Thunder Bay, ON, Canada 1 second ago
75°F24°C & Mostly Clear
Wind is 5 mph8 km/h from the Northwest, gusting to 9 mph14 km/h
| September 17 | ||||
| 6pm | 74°F24°C | 5 mph8 km/h North | Mostly Clear | |
| 7pm | 72°F22°C | 8 mph13 km/h Northwest | Cloudy | |
| 8pm | 70°F21°C | 5 mph8 km/h North | Cloudy | |
| 9pm | 68°F20°C | 4 mph6 km/h Northeast | Cloudy | |
| 10pm | 67°F19°C | 4 mph6 km/h North | Cloudy | |
| 11pm | 65°F18°C | 5 mph8 km/h Northeast | Cloudy | |
| September 18 | ||||
| 12am | 63°F17°C | 7 mph11 km/h North | Mostly Cloudy | |
| 1am | 62°F17°C | 7 mph11 km/h Northeast | Mostly Cloudy | |
| 2am | 61°F16°C | 7 mph12 km/h Northeast | Mostly Cloudy | |
| 3am | 60°F16°C | 8 mph13 km/h Northeast | Cloudy | |
| 4am | 59°F15°C | 8 mph12 km/h Northeast | Cloudy | |
| 5am | 58°F14°C | 8 mph12 km/h Northeast | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 60°F16°C | 77°F25°C | 7 mph12 km/h from Northwest | Partly Cloudy | Cloudy |
| September 18 | 56°F13°C | 63°F17°C | 7 mph12 km/h from East | Mostly Cloudy | Partly Cloudy |
| September 19 | 53°F12°C | 59°F15°C | 11 mph18 km/h from East | Partly Cloudy | Mostly Cloudy |
| September 20 | 55°F13°C | 63°F17°C | 10 mph17 km/h from East | Drizzle | Rain |
| September 21 | 58°F14°C | 66°F19°C | 5 mph8 km/h from South | Rain | Haze |
| September 22 | 57°F14°C | 65°F19°C | 4 mph6 km/h from Southeast | Mostly Cloudy | Mostly Cloudy |
| September 23 | 57°F14°C | 67°F20°C | 4 mph7 km/h from Northeast | Mostly Cloudy | Partly Cloudy |
Yes
Low of 55°F13°C, High of 64°F18°CWind: 7 mph12 km/h
Precipitation: None