No
you don't need a jacket based on the weather in Chicago, IL 60659, USA 1 second ago
68°F20°C & Clear
Wind is 1 mph1 km/h from the Southwest, gusting to 3 mph5 km/h
| September 18 | ||||
| 10am | 68°F20°C | 1 mph2 km/h Southwest | Mostly Clear | |
| 11am | 73°F23°C | 2 mph2 km/h South | Mostly Clear | |
| 12pm | 76°F24°C | 4 mph6 km/h Southeast | Mostly Clear | |
| 1pm | 78°F26°C | 5 mph7 km/h East | Mostly Clear | |
| 2pm | 80°F27°C | 5 mph9 km/h East | Mostly Clear | |
| 3pm | 80°F27°C | 7 mph11 km/h East | Mostly Clear | |
| 4pm | 80°F27°C | 7 mph12 km/h East | Clear | |
| 5pm | 79°F26°C | 7 mph12 km/h East | Clear | |
| 6pm | 78°F26°C | 7 mph11 km/h East | Clear | |
| 7pm | 77°F25°C | 6 mph10 km/h East | Clear | |
| 8pm | 74°F23°C | 5 mph8 km/h East | Clear | |
| 9pm | 72°F22°C | 5 mph8 km/h East | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 18 | 60°F15°C | 80°F27°C | 5 mph8 km/h from East | Mostly Clear | Mostly Clear |
| September 19 | 66°F19°C | 81°F27°C | 6 mph10 km/h from East | Partly Cloudy | Mostly Cloudy |
| September 20 | 66°F19°C | 77°F25°C | 6 mph10 km/h from Southeast | Rain | Mostly Cloudy |
| September 21 | 65°F18°C | 77°F25°C | 7 mph11 km/h from Southwest | Rain | Rain |
| September 22 | 65°F18°C | 76°F25°C | 5 mph8 km/h from Southwest | Drizzle | Partly Cloudy |
| September 23 | 65°F18°C | 75°F24°C | 6 mph9 km/h from East | Drizzle | Drizzle |
| September 24 | 66°F19°C | 72°F22°C | 8 mph13 km/h from Northeast | Drizzle | Mostly Cloudy |
No
Low of 66°F19°C, High of 81°F27°CWind: 6 mph10 km/h
Precipitation: None