No

you don't need a jacket based on the weather in Joliet, IL, USA 1 second ago

80°F26°C & Cloudy

Wind is 7 mph11 km/h from the South, gusting to 12 mph20 km/h
September 13
4pm81°F27°C7 mph12 km/h SoutheastPartly Cloudy
5pm82°F28°C7 mph11 km/h SoutheastMostly Clear
6pm82°F28°C7 mph11 km/h SoutheastMostly Clear
7pm81°F27°C6 mph10 km/h EastMostly Clear
8pm79°F26°C7 mph11 km/h EastMostly Clear
9pm76°F25°C7 mph11 km/h EastMostly Clear
10pm73°F23°C7 mph11 km/h EastPartly Cloudy
11pm72°F22°C7 mph11 km/h EastPartly Cloudy
September 14
12am71°F22°C6 mph10 km/h EastMostly Clear
1am70°F21°C6 mph10 km/h EastMostly Clear
2am69°F20°C6 mph9 km/h EastClear
3am68°F20°C5 mph9 km/h EastClear
DateLowHighWindDayNight
September 1364°F18°C82°F28°C7 mph11 km/h from SoutheastThunderstormsMostly Clear
September 1464°F18°C85°F29°C7 mph11 km/h from EastMostly ClearClear
September 1562°F17°C85°F29°C6 mph9 km/h from EastClearMostly Clear
September 1661°F16°C85°F29°C5 mph7 km/h from EastMostly ClearMostly Clear
September 1761°F16°C85°F29°C4 mph7 km/h from SoutheastMostly ClearPartly Cloudy
September 1864°F18°C84°F29°C7 mph11 km/h from SouthPartly CloudyMostly Cloudy
September 1962°F17°C77°F25°C7 mph12 km/h from NorthDrizzlePartly Cloudy

No

Low of 64°F18°C, High of 85°F30°C
Wind: 7 mph11 km/h
Precipitation: None

Support This Page