No
you don't need a jacket based on the weather in Joliet, IL, USA 1 second ago
59°F15°C & Clear
Wind is 2 mph3 km/h from the Southeast, gusting to 4 mph6 km/h
| September 18 | ||||
| 5am | 59°F15°C | 1 mph2 km/h East | Clear | |
| 6am | 58°F15°C | 4 mph6 km/h East | Clear | |
| 7am | 57°F14°C | 3 mph6 km/h East | Clear | |
| 8am | 57°F14°C | 3 mph5 km/h East | Clear | |
| 9am | 61°F16°C | 1 mph2 km/h East | Clear | |
| 10am | 68°F20°C | 2 mph3 km/h Southeast | Clear | |
| 11am | 74°F23°C | 2 mph4 km/h South | Mostly Clear | |
| 12pm | 78°F26°C | 2 mph4 km/h South | Mostly Clear | |
| 1pm | 82°F28°C | 3 mph4 km/h South | Partly Cloudy | |
| 2pm | 84°F29°C | 2 mph4 km/h South | Mostly Clear | |
| 3pm | 85°F30°C | 2 mph3 km/h South | Clear | |
| 4pm | 86°F30°C | 2 mph4 km/h Southeast | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 18 | 57°F14°C | 86°F30°C | 3 mph4 km/h from Southeast | Mostly Clear | Clear |
| September 19 | 62°F16°C | 86°F30°C | 5 mph8 km/h from South | Partly Cloudy | Cloudy |
| September 20 | 64°F18°C | 79°F26°C | 5 mph9 km/h from South | Drizzle | Mostly Cloudy |
| September 21 | 62°F17°C | 76°F24°C | 7 mph11 km/h from Southwest | Drizzle | Rain |
| September 22 | 64°F18°C | 77°F25°C | 7 mph11 km/h from Southwest | Rain | Drizzle |
| September 23 | 62°F17°C | 77°F25°C | 6 mph10 km/h from Southeast | Drizzle | Rain |
| September 24 | 63°F17°C | 73°F23°C | 8 mph13 km/h from Northeast | Rain | Drizzle |
No
Low of 62°F17°C, High of 86°F30°CWind: 5 mph8 km/h
Precipitation: 34% rain