No

Why? Because you should be inside at home! #StayHome

But if you absolutely had to go out to get groceries, medication or other essential travel, No, you don't need a jacket.

Based on the weather in Chicago, IL 60639, USA as of May 25, 2020 8:13am local time.

Now

Partly Cloudy
Temp: 71°F22°C
Wind: 8 MPH12 KPH
Precipitation: None

Today

Next 2 hours: No

Next 4 hours: No

Next 8 hours: No

Tomorrow

Yes

Clear throughout the day.
Low of 68°F20°C, High of 87°F31°C
Wind: 8 MPH13 KPH
Precipitation: 35% rain