Yes

you do need a jacket based on the weather in Minooka, IL, USA 1 second ago

Why? Because it's bitterly cold.
47°F8°C & Clear

Wind is 3 mph5 km/h from the W, gusting to 4 mph7 km/h
September 8
2am46°F8°C3 mph5 km/h WClear
3am45°F7°C3 mph6 km/h WMostly Clear
4am44°F7°C3 mph6 km/h WMostly Clear
5am43°F6°C4 mph6 km/h WClear
6am43°F6°C4 mph6 km/h WClear
7am42°F6°C4 mph6 km/h WClear
8am44°F6°C4 mph6 km/h WClear
9am49°F9°C4 mph7 km/h WClear
10am55°F13°C6 mph9 km/h WClear
11am61°F16°C7 mph12 km/h WClear
12pm65°F18°C8 mph13 km/h WMostly Clear
1pm68°F20°C9 mph14 km/h WPartly Cloudy
DateLowHighWindDayNight
September 842°F6°C73°F23°C7 mph12 km/h from WMostly ClearClear
September 951°F11°C80°F27°C9 mph14 km/h from WClearClear
September 1052°F11°C84°F29°C6 mph10 km/h from SMostly ClearClear
September 1154°F12°C87°F30°C6 mph9 km/h from SClearClear
September 1256°F13°C88°F31°C6 mph9 km/h from SEClearMostly Clear
September 1358°F14°C84°F29°C7 mph11 km/h from EMostly ClearPartly Cloudy
September 1460°F16°C82°F28°C7 mph11 km/h from EPartly CloudyPartly Cloudy

Yes

Low of 51°F11°C, High of 80°F27°C
Wind: 9 mph14 km/h
Precipitation: None

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