No
you don't need a jacket based on the weather in Bay City, MI, USA 1 second ago
73°F23°C & Clear
Wind is 4 mph6 km/h from the East, gusting to 7 mph11 km/h
| September 13 | ||||
| 8pm | 72°F22°C | 4 mph6 km/h Southeast | Clear | |
| 9pm | 69°F21°C | 4 mph7 km/h Southeast | Clear | |
| 10pm | 67°F20°C | 4 mph7 km/h Southeast | Clear | |
| 11pm | 66°F19°C | 4 mph7 km/h Southeast | Clear | |
| September 14 | ||||
| 12am | 64°F18°C | 3 mph5 km/h South | Clear | |
| 1am | 62°F17°C | 2 mph4 km/h Southwest | Clear | |
| 2am | 61°F16°C | 2 mph4 km/h Southwest | Clear | |
| 3am | 60°F16°C | 3 mph4 km/h West | Clear | |
| 4am | 59°F15°C | 3 mph4 km/h West | Clear | |
| 5am | 58°F15°C | 2 mph3 km/h Southwest | Clear | |
| 6am | 58°F14°C | 2 mph4 km/h Southwest | Clear | |
| 7am | 57°F14°C | 2 mph3 km/h Southwest | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 13 | 57°F14°C | 80°F27°C | 3 mph5 km/h from Southeast | Partly Cloudy | Clear |
| September 14 | 57°F14°C | 78°F26°C | 5 mph8 km/h from Northeast | Mostly Clear | Mostly Clear |
| September 15 | 61°F16°C | 77°F25°C | 7 mph11 km/h from Northeast | Mostly Clear | Mostly Clear |
| September 16 | 57°F14°C | 78°F26°C | 4 mph7 km/h from Northeast | Mostly Clear | Mostly Clear |
| September 17 | 56°F14°C | 80°F27°C | 3 mph6 km/h from East | Mostly Clear | Mostly Clear |
| September 18 | 59°F15°C | 82°F28°C | 4 mph7 km/h from South | Mostly Clear | Partly Cloudy |
| September 19 | 60°F15°C | 72°F22°C | 10 mph17 km/h from Northeast | Partly Cloudy | Drizzle |
Yes
Low of 57°F14°C, High of 78°F26°CWind: 5 mph8 km/h
Precipitation: None