No
you don't need a jacket based on the weather in Illinois, USA 1 second ago
64°F18°C & Mostly Clear
Wind is 2 mph3 km/h from the South, gusting to 4 mph6 km/h
| August 27 | ||||
| 10pm | 63°F17°C | 2 mph4 km/h South | Mostly Clear | |
| 11pm | 61°F16°C | 4 mph6 km/h South | Mostly Clear | |
| August 28 | ||||
| 12am | 60°F16°C | 4 mph7 km/h South | Mostly Clear | |
| 1am | 60°F15°C | 5 mph8 km/h South | Partly Cloudy | |
| 2am | 60°F15°C | 6 mph9 km/h South | Partly Cloudy | |
| 3am | 60°F15°C | 6 mph10 km/h Southwest | Mostly Cloudy | |
| 4am | 59°F15°C | 7 mph11 km/h Southwest | Mostly Cloudy | |
| 5am | 60°F15°C | 8 mph12 km/h Southwest | Mostly Cloudy | |
| 6am | 60°F15°C | 8 mph13 km/h Southwest | Mostly Cloudy | |
| 7am | 59°F15°C | 8 mph13 km/h Southwest | Mostly Cloudy | |
| 8am | 59°F15°C | 8 mph12 km/h Southwest | Mostly Cloudy | |
| 9am | 61°F16°C | 7 mph12 km/h Southwest | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| August 27 | 50°F10°C | 76°F24°C | 5 mph8 km/h from West | Mostly Clear | Partly Cloudy |
| August 28 | 59°F15°C | 79°F26°C | 8 mph13 km/h from West | Partly Cloudy | Mostly Clear |
| August 29 | 56°F13°C | 75°F24°C | 7 mph12 km/h from Northeast | Partly Cloudy | Partly Cloudy |
| August 30 | 51°F11°C | 75°F24°C | 7 mph12 km/h from Northeast | Mostly Clear | Partly Cloudy |
| August 31 | 53°F12°C | 76°F25°C | 7 mph12 km/h from East | Mostly Clear | Mostly Clear |
| September 1 | 54°F12°C | 77°F25°C | 6 mph10 km/h from East | Mostly Clear | Mostly Clear |
| September 2 | 56°F13°C | 76°F25°C | 5 mph8 km/h from Southeast | Partly Cloudy | Partly Cloudy |
No
Low of 59°F15°C, High of 80°F27°CWind: 8 mph13 km/h
Precipitation: None