Yes

you do need a jacket based on the weather in Chicago, IL 60637, USA 1 second ago

Why? Because too cold for just a hoodie, too warm for a parka and the wind makes walking forward feel like moonwalking in reverse!
48°F9°C & Cloudy

Wind is 13 mph21 km/h from the West, gusting to 25 mph41 km/h
March 30
11pm46°F8°C14 mph22 km/h WestCloudy
March 31
12am45°F7°C12 mph20 km/h WestCloudy
1am44°F6°C11 mph18 km/h WestCloudy
2am42°F6°C11 mph18 km/h WestCloudy
3am42°F6°C11 mph18 km/h WestCloudy
4am42°F5°C10 mph16 km/h NorthwestCloudy
5am39°F4°C12 mph19 km/h NorthwestCloudy
6am38°F3°C11 mph18 km/h NorthwestCloudy
7am37°F3°C11 mph18 km/h NorthwestCloudy
8am36°F2°C11 mph18 km/h NorthwestCloudy
9am36°F2°C11 mph17 km/h NorthwestCloudy
10am35°F2°C11 mph18 km/h NorthwestCloudy
DateLowHighWindDayNight
March 3044°F6°C76°F25°C12 mph19 km/h from SouthwestRainCloudy
March 3135°F2°C44°F6°C10 mph16 km/h from NorthMostly CloudyMostly Clear
April 134°F1°C45°F7°C9 mph15 km/h from EastMostly CloudyRain
April 241°F5°C69°F21°C15 mph25 km/h from SouthRainRain
April 346°F8°C59°F15°C9 mph15 km/h from WestMostly CloudyMostly Cloudy
April 440°F4°C49°F9°C9 mph14 km/h from NortheastMostly CloudyRain
April 540°F4°C47°F8°C10 mph16 km/h from NorthDrizzleRain

Yes

Low of 36°F2°C, High of 44°F7°C
Wind: 10 mph16 km/h
Precipitation: None

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