No
you don't need a jacket based on the weather in Chicago Heights, IL, USA 1 second ago
73°F23°C & Partly Cloudy
Wind is 6 mph10 km/h from the North, gusting to 11 mph18 km/h
| September 25 | ||||
| 6pm | 72°F22°C | 7 mph11 km/h Northeast | Mostly Clear | |
| 7pm | 70°F21°C | 6 mph9 km/h Northeast | Mostly Clear | |
| 8pm | 67°F19°C | 4 mph6 km/h East | Clear | |
| 9pm | 64°F18°C | 3 mph5 km/h Southeast | Clear | |
| 10pm | 63°F17°C | 2 mph3 km/h Southeast | Clear | |
| 11pm | 61°F16°C | 3 mph4 km/h South | Clear | |
| September 26 | ||||
| 12am | 60°F15°C | 4 mph6 km/h South | Clear | |
| 1am | 59°F15°C | 3 mph5 km/h South | Clear | |
| 2am | 58°F14°C | 3 mph6 km/h Southwest | Clear | |
| 3am | 57°F14°C | 4 mph6 km/h Southwest | Clear | |
| 4am | 57°F14°C | 4 mph7 km/h Southwest | Clear | |
| 5am | 56°F13°C | 4 mph7 km/h Southwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 25 | 59°F15°C | 74°F23°C | 5 mph7 km/h from North | Partly Cloudy | Clear |
| September 26 | 54°F12°C | 79°F26°C | 5 mph8 km/h from Southwest | Clear | Mostly Clear |
| September 27 | 59°F15°C | 81°F27°C | 6 mph9 km/h from West | Mostly Clear | Clear |
| September 28 | 59°F15°C | 82°F28°C | 4 mph7 km/h from Northwest | Clear | Clear |
| September 29 | 58°F15°C | 82°F28°C | 4 mph6 km/h from East | Mostly Clear | Partly Cloudy |
| September 30 | 61°F16°C | 78°F26°C | 7 mph11 km/h from Northeast | Partly Cloudy | Mostly Cloudy |
| October 1 | 58°F14°C | 74°F23°C | 9 mph14 km/h from Northeast | Mostly Cloudy | Mostly Clear |
Yes
Low of 55°F13°C, High of 79°F26°CWind: 5 mph8 km/h
Precipitation: None