Yes

you do need a jacket based on the weather in Oak Lawn, IL 60458, USA 1 second ago

Why? Because it's bitterly cold.
45°F7°C & Cloudy

Wind is 4 mph7 km/h from the N, gusting to 9 mph15 km/h
February 22
7am44°F7°C4 mph6 km/h NDrizzle
8am43°F6°C4 mph7 km/h NDrizzle
9am44°F7°C5 mph9 km/h NECloudy
10am46°F8°C5 mph8 km/h NECloudy
11am48°F9°C6 mph10 km/h NECloudy
12pm51°F10°C6 mph10 km/h NEMostly Cloudy
1pm54°F12°C6 mph10 km/h NMostly Cloudy
2pm56°F13°C6 mph10 km/h NMostly Cloudy
3pm57°F14°C6 mph9 km/h NMostly Cloudy
4pm58°F14°C5 mph8 km/h NMostly Cloudy
5pm57°F14°C3 mph5 km/h NMostly Cloudy
6pm54°F12°C3 mph5 km/h EMostly Cloudy
DateLowHighWindDayNight
February 2243°F6°C58°F14°C5 mph8 km/h from NEDrizzleMostly Clear
February 2328°F-2°C46°F8°C10 mph16 km/h from NMostly CloudyMostly Cloudy
February 2424°F-4°C37°F3°C5 mph9 km/h from NWMostly ClearMostly Clear
February 2530°F-1°C56°F14°C9 mph14 km/h from SWPartly CloudyMostly Clear
February 2634°F1°C64°F18°C9 mph15 km/h from SMostly ClearMostly Cloudy
February 2754°F12°C69°F20°C14 mph23 km/h from SCloudyDrizzle
February 2825°F-4°C67°F19°C16 mph25 km/h from SWDrizzleMostly Cloudy

Yes

Low of 28°F-3°C, High of 46°F8°C
Wind: 10 mph16 km/h
Precipitation: None

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