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 St. Louis, MO, USA as of June 1, 2020 3:07pm local time.

Now

Clear
Temp: 82°F28°C
Wind: 7 MPH12 KPH
Precipitation: None

Today

Next 2 hours: No

Next 4 hours: No

Next 8 hours: No

Tomorrow

No

Clear throughout the day.
Low of 64°F18°C, High of 91°F33°C
Wind: 8 MPH13 KPH
Precipitation: 4% rain