No
you don't need a jacket based on the weather in Chicago, IL, USA 2 minutes ago
65°F19°C & Mostly Clear
Wind is 1 mph2 km/h from the Southwest, gusting to 2 mph4 km/h
| September 18 | ||||
| 5am | 65°F18°C | 2 mph3 km/h South | Mostly Clear | |
| 6am | 65°F18°C | 4 mph7 km/h Southeast | Clear | |
| 7am | 64°F18°C | 3 mph5 km/h Southeast | Clear | |
| 8am | 64°F18°C | 3 mph6 km/h South | Mostly Clear | |
| 9am | 66°F19°C | 3 mph4 km/h South | Mostly Clear | |
| 10am | 69°F21°C | 3 mph4 km/h South | Mostly Clear | |
| 11am | 73°F23°C | 2 mph3 km/h South | Mostly Clear | |
| 12pm | 77°F25°C | 3 mph4 km/h Southeast | Mostly Clear | |
| 1pm | 79°F26°C | 3 mph5 km/h Southeast | Mostly Clear | |
| 2pm | 81°F27°C | 4 mph6 km/h East | Mostly Clear | |
| 3pm | 82°F28°C | 5 mph8 km/h East | Clear | |
| 4pm | 82°F28°C | 7 mph11 km/h East | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 18 | 64°F18°C | 82°F28°C | 5 mph7 km/h from East | Mostly Clear | Mostly Clear |
| September 19 | 64°F18°C | 84°F29°C | 5 mph8 km/h from East | Mostly Clear | Mostly Cloudy |
| September 20 | 65°F19°C | 80°F27°C | 5 mph8 km/h from Southeast | Rain | Mostly Cloudy |
| September 21 | 65°F18°C | 79°F26°C | 7 mph12 km/h from Southwest | Drizzle | Rain |
| September 22 | 65°F19°C | 78°F25°C | 7 mph11 km/h from Southwest | Rain | Drizzle |
| September 23 | 63°F17°C | 77°F25°C | 5 mph9 km/h from Southeast | Drizzle | Rain |
| September 24 | 64°F18°C | 73°F23°C | 8 mph13 km/h from Northeast | Rain | Mostly Cloudy |
No
Low of 64°F18°C, High of 84°F29°CWind: 5 mph8 km/h
Precipitation: None