Yes
you do need a jacket based on the weather in Chicago, IL 60638, USA 1 second ago
Why? Because it's pretty chilly.
50°F10°C & Mostly Clear
Wind is 4 mph6 km/h from the W, gusting to 7 mph11 km/h
| September 8 | ||||
| 4am | 50°F10°C | 4 mph7 km/h W | Partly Cloudy | |
| 5am | 49°F9°C | 4 mph7 km/h W | Mostly Clear | |
| 6am | 48°F9°C | 5 mph7 km/h W | Mostly Clear | |
| 7am | 47°F9°C | 5 mph8 km/h W | Clear | |
| 8am | 48°F9°C | 5 mph8 km/h W | Clear | |
| 9am | 52°F11°C | 6 mph9 km/h W | Clear | |
| 10am | 57°F14°C | 6 mph10 km/h W | Mostly Clear | |
| 11am | 62°F16°C | 8 mph12 km/h W | Mostly Clear | |
| 12pm | 66°F19°C | 8 mph13 km/h W | Mostly Clear | |
| 1pm | 69°F20°C | 8 mph13 km/h W | Partly Cloudy | |
| 2pm | 71°F21°C | 8 mph13 km/h W | Partly Cloudy | |
| 3pm | 72°F22°C | 8 mph13 km/h W | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 8 | 47°F9°C | 74°F24°C | 8 mph12 km/h from W | Mostly Clear | Clear |
| September 9 | 56°F13°C | 82°F28°C | 10 mph15 km/h from W | Clear | Clear |
| September 10 | 57°F14°C | 86°F30°C | 7 mph11 km/h from SW | Mostly Clear | Clear |
| September 11 | 59°F15°C | 88°F31°C | 6 mph9 km/h from S | Clear | Clear |
| September 12 | 61°F16°C | 88°F31°C | 5 mph8 km/h from SE | Clear | Partly Cloudy |
| September 13 | 64°F18°C | 83°F28°C | 6 mph10 km/h from E | Partly Cloudy | Mostly Cloudy |
| September 14 | 64°F18°C | 79°F26°C | 6 mph9 km/h from E | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 55°F13°C, High of 82°F28°CWind: 10 mph15 km/h
Precipitation: None