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 Barrington, IL 60010, USA as of May 26, 2020 10:28pm local time.

Now

Clear
Temp: 75°F24°C
Wind: 7 MPH11 KPH
Precipitation: None

Today

Next 2 hours: No

Next 4 hours: No

Next 8 hours: No

Tomorrow

Yes

Light rain starting in the afternoon.
Low of 67°F20°C, High of 82°F28°C
Wind: 7 MPH11 KPH
Precipitation: 85% rain