No
you don't need a jacket based on the weather in Grand Rapids, MI, USA 1 second ago
70°F21°C & Clear
Wind is 4 mph6 km/h from the East, gusting to 8 mph13 km/h
| September 16 | ||||
| 10pm | 68°F20°C | 3 mph4 km/h North | Clear | |
| 11pm | 66°F19°C | 3 mph5 km/h Northeast | Clear | |
| September 17 | ||||
| 12am | 64°F18°C | 4 mph6 km/h North | Clear | |
| 1am | 62°F17°C | 4 mph7 km/h Northeast | Clear | |
| 2am | 61°F16°C | 4 mph7 km/h East | Clear | |
| 3am | 60°F16°C | 4 mph6 km/h East | Clear | |
| 4am | 58°F14°C | 3 mph6 km/h East | Mostly Clear | |
| 5am | 57°F14°C | 4 mph6 km/h East | Clear | |
| 6am | 56°F13°C | 3 mph6 km/h East | Mostly Clear | |
| 7am | 55°F13°C | 3 mph5 km/h East | Mostly Clear | |
| 8am | 56°F13°C | 3 mph5 km/h East | Mostly Clear | |
| 9am | 61°F16°C | 2 mph3 km/h East | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 16 | 56°F13°C | 82°F28°C | 2 mph3 km/h from Northeast | Mostly Clear | Clear |
| September 17 | 55°F13°C | 84°F29°C | 3 mph5 km/h from North | Mostly Clear | Clear |
| September 18 | 59°F15°C | 84°F29°C | 5 mph8 km/h from West | Mostly Clear | Mostly Clear |
| September 19 | 58°F15°C | 78°F25°C | 8 mph12 km/h from East | Mostly Clear | Mostly Clear |
| September 20 | 51°F11°C | 78°F26°C | 9 mph14 km/h from East | Mostly Clear | Partly Cloudy |
| September 21 | 56°F14°C | 82°F28°C | 9 mph14 km/h from South | Partly Cloudy | Rain |
| September 22 | 63°F17°C | 77°F25°C | 10 mph15 km/h from Southwest | Rain | Thunderstorms |
Yes
Low of 55°F13°C, High of 84°F29°CWind: 3 mph5 km/h
Precipitation: None