No
you don't need a jacket based on the weather in Illinois, USA 1 second ago
61°F16°C & Cloudy
Wind is 8 mph13 km/h from the Northwest, gusting to 17 mph27 km/h
| September 5 | ||||
| 9pm | 60°F16°C | 8 mph13 km/h Northwest | Cloudy | |
| 10pm | 58°F15°C | 8 mph12 km/h Northwest | Cloudy | |
| 11pm | 56°F14°C | 6 mph10 km/h Northwest | Cloudy | |
| September 6 | ||||
| 12am | 55°F13°C | 5 mph8 km/h Northwest | Cloudy | |
| 1am | 54°F12°C | 5 mph8 km/h Northwest | Cloudy | |
| 2am | 52°F11°C | 4 mph6 km/h Northwest | Cloudy | |
| 3am | 51°F11°C | 4 mph6 km/h West | Mostly Clear | |
| 4am | 50°F10°C | 4 mph6 km/h West | Clear | |
| 5am | 49°F9°C | 4 mph6 km/h Southwest | Clear | |
| 6am | 48°F9°C | 4 mph7 km/h Southwest | Clear | |
| 7am | 47°F8°C | 4 mph7 km/h West | Clear | |
| 8am | 48°F9°C | 4 mph7 km/h West | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 5 | 54°F12°C | 69°F20°C | 6 mph9 km/h from West | Mostly Cloudy | Partly Cloudy |
| September 6 | 47°F8°C | 67°F20°C | 10 mph16 km/h from West | Mostly Clear | Mostly Clear |
| September 7 | 46°F8°C | 69°F21°C | 6 mph10 km/h from Northwest | Mostly Clear | Clear |
| September 8 | 45°F7°C | 73°F23°C | 7 mph11 km/h from South | Clear | Mostly Clear |
| September 9 | 52°F11°C | 75°F24°C | 8 mph13 km/h from South | Partly Cloudy | Partly Cloudy |
| September 10 | 56°F13°C | 81°F27°C | 5 mph7 km/h from South | Mostly Clear | Mostly Clear |
| September 11 | 57°F14°C | 80°F27°C | 5 mph8 km/h from Northeast | Mostly Clear | Mostly Clear |
Yes
Low of 47°F9°C, High of 67°F20°CWind: 10 mph16 km/h
Precipitation: None