No
you don't need a jacket based on the weather in Joliet, IL, USA 1 second ago
67°F19°C & Mostly Clear
Wind is 2 mph3 km/h from the North, gusting to 4 mph7 km/h
| September 17 | ||||
| 11am | 71°F22°C | 2 mph4 km/h North | Mostly Clear | |
| 12pm | 76°F25°C | 2 mph4 km/h Northeast | Mostly Clear | |
| 1pm | 80°F27°C | 3 mph5 km/h Northeast | Mostly Clear | |
| 2pm | 82°F28°C | 3 mph5 km/h East | Clear | |
| 3pm | 84°F29°C | 3 mph5 km/h East | Clear | |
| 4pm | 85°F30°C | 3 mph5 km/h East | Clear | |
| 5pm | 85°F29°C | 4 mph6 km/h Northeast | Clear | |
| 6pm | 84°F29°C | 4 mph7 km/h Northeast | Mostly Clear | |
| 7pm | 82°F28°C | 4 mph7 km/h Northeast | Mostly Clear | |
| 8pm | 77°F25°C | 4 mph7 km/h Northeast | Mostly Clear | |
| 9pm | 73°F23°C | 5 mph8 km/h East | Clear | |
| 10pm | 70°F21°C | 5 mph8 km/h East | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 57°F14°C | 85°F30°C | 3 mph5 km/h from Northeast | Mostly Clear | Clear |
| September 18 | 59°F15°C | 86°F30°C | 3 mph5 km/h from Southeast | Mostly Clear | Clear |
| September 19 | 62°F17°C | 87°F31°C | 6 mph9 km/h from East | Mostly Clear | Partly Cloudy |
| September 20 | 63°F17°C | 82°F28°C | 6 mph9 km/h from South | Partly Cloudy | Partly Cloudy |
| September 21 | 63°F17°C | 79°F26°C | 9 mph14 km/h from Southwest | Mostly Cloudy | Thunderstorms |
| September 22 | 63°F17°C | 79°F26°C | 7 mph12 km/h from Southwest | Thunderstorms | Thunderstorms |
| September 23 | 62°F16°C | 78°F25°C | 7 mph12 km/h from West | Thunderstorms | Partly Cloudy |
Yes
Low of 58°F15°C, High of 86°F30°CWind: 3 mph5 km/h
Precipitation: None