No
you don't need a jacket based on the weather in Chicago, IL, USA 21 minutes ago
59°F15°C & Mostly Clear
Wind is 8 mph13 km/h from the Southeast, gusting to 13 mph21 km/h
| September 9 | ||||
| 3am | 57°F14°C | 8 mph13 km/h South | Mostly Clear | |
| 4am | 55°F13°C | 8 mph13 km/h South | Mostly Clear | |
| 5am | 54°F12°C | 7 mph11 km/h South | Mostly Clear | |
| 6am | 53°F12°C | 7 mph12 km/h South | Clear | |
| 7am | 52°F11°C | 9 mph14 km/h South | Partly Cloudy | |
| 8am | 52°F11°C | 9 mph14 km/h South | Mostly Cloudy | |
| 9am | 55°F13°C | 7 mph11 km/h South | Mostly Cloudy | |
| 10am | 59°F15°C | 6 mph10 km/h South | Partly Cloudy | |
| 11am | 64°F18°C | 6 mph9 km/h South | Mostly Cloudy | |
| 12pm | 68°F20°C | 6 mph10 km/h South | Mostly Cloudy | |
| 1pm | 70°F21°C | 6 mph10 km/h South | Mostly Cloudy | |
| 2pm | 72°F22°C | 7 mph11 km/h South | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 9 | 52°F11°C | 75°F24°C | 6 mph10 km/h from South | Mostly Cloudy | Partly Cloudy |
| September 10 | 57°F14°C | 78°F26°C | 4 mph6 km/h from Southeast | Partly Cloudy | Mostly Clear |
| September 11 | 62°F17°C | 78°F25°C | 5 mph9 km/h from Northeast | Clear | Clear |
| September 12 | 62°F17°C | 82°F28°C | 4 mph7 km/h from Southeast | Mostly Clear | Partly Cloudy |
| September 13 | 66°F19°C | 84°F29°C | 8 mph12 km/h from Southwest | Mostly Cloudy | Rain |
| September 14 | 66°F19°C | 78°F26°C | 7 mph11 km/h from Northeast | Mostly Clear | Partly Cloudy |
| September 15 | 63°F17°C | 71°F22°C | 6 mph10 km/h from East | Partly Cloudy | Partly Cloudy |
Yes
Low of 57°F14°C, High of 78°F26°CWind: 4 mph6 km/h
Precipitation: None