Yes
you do need a jacket based on the weather in Chicago, IL, USA 1 second ago
Why? Because it's cool. Pleasantly cool, but cool.
52°F11°C & Mostly Clear
Wind is 6 mph9 km/h from the W, gusting to 9 mph14 km/h
| September 8 | ||||
| 3am | 51°F11°C | 6 mph9 km/h W | Mostly Clear | |
| 4am | 51°F11°C | 6 mph10 km/h W | Partly Cloudy | |
| 5am | 50°F10°C | 6 mph10 km/h W | Mostly Clear | |
| 6am | 50°F10°C | 7 mph11 km/h W | Partly Cloudy | |
| 7am | 50°F10°C | 7 mph11 km/h W | Clear | |
| 8am | 51°F10°C | 7 mph11 km/h W | Clear | |
| 9am | 54°F12°C | 8 mph12 km/h W | Clear | |
| 10am | 58°F14°C | 8 mph12 km/h W | Mostly Clear | |
| 11am | 62°F17°C | 8 mph14 km/h W | Mostly Clear | |
| 12pm | 66°F19°C | 9 mph14 km/h W | Mostly Clear | |
| 1pm | 68°F20°C | 8 mph13 km/h W | Partly Cloudy | |
| 2pm | 70°F21°C | 8 mph13 km/h W | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 8 | 50°F10°C | 73°F23°C | 8 mph14 km/h from W | Mostly Clear | Clear |
| September 9 | 58°F14°C | 81°F27°C | 10 mph17 km/h from W | Clear | Clear |
| September 10 | 59°F15°C | 83°F29°C | 7 mph11 km/h from SW | Mostly Clear | Clear |
| September 11 | 62°F17°C | 86°F30°C | 6 mph9 km/h from S | Clear | Clear |
| September 12 | 64°F18°C | 85°F30°C | 6 mph9 km/h from E | Clear | Clear |
| September 13 | 65°F19°C | 81°F27°C | 7 mph11 km/h from E | Mostly Clear | Partly Cloudy |
| September 14 | 64°F18°C | 76°F25°C | 8 mph12 km/h from E | Mostly Cloudy | Partly Cloudy |
Yes
Low of 57°F14°C, High of 81°F27°CWind: 10 mph17 km/h
Precipitation: None