No
you don't need a jacket based on the weather in Chicago (Douglas), Illinois, United States 1 second ago
71°F22°C & Clear
Wind is 6 mph9 km/h from the Northeast, gusting to 14 mph23 km/h
| September 15 | ||||
| 10pm | 71°F21°C | 5 mph8 km/h Northeast | Clear | |
| 11pm | 70°F21°C | 6 mph9 km/h Northeast | Clear | |
| September 16 | ||||
| 12am | 69°F21°C | 6 mph10 km/h Northeast | Clear | |
| 1am | 69°F21°C | 7 mph12 km/h East | Clear | |
| 2am | 69°F20°C | 6 mph10 km/h Southeast | Clear | |
| 3am | 67°F19°C | 6 mph10 km/h Southeast | Clear | |
| 4am | 66°F19°C | 5 mph9 km/h Southeast | Clear | |
| 5am | 65°F18°C | 5 mph7 km/h Southeast | Clear | |
| 6am | 65°F18°C | 4 mph7 km/h Southeast | Clear | |
| 7am | 64°F18°C | 4 mph6 km/h Southeast | Clear | |
| 8am | 64°F18°C | 4 mph6 km/h Southeast | Clear | |
| 9am | 66°F19°C | 3 mph5 km/h Southeast | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 15 | 67°F19°C | 77°F25°C | 7 mph11 km/h from Northeast | Clear | Clear |
| September 16 | 64°F18°C | 80°F27°C | 5 mph8 km/h from Northeast | Clear | Mostly Clear |
| September 17 | 65°F18°C | 81°F27°C | 5 mph7 km/h from Northeast | Clear | Mostly Clear |
| September 18 | 65°F18°C | 82°F28°C | 5 mph7 km/h from East | Mostly Clear | Mostly Clear |
| September 19 | 65°F19°C | 81°F27°C | 6 mph10 km/h from East | Partly Cloudy | Mostly Cloudy |
| September 20 | 65°F18°C | 79°F26°C | 6 mph10 km/h from South | Mostly Cloudy | Partly Cloudy |
| September 21 | 65°F18°C | 82°F28°C | 9 mph15 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
No
Low of 64°F18°C, High of 80°F27°CWind: 5 mph8 km/h
Precipitation: None