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 Paris, France as of May 25, 2020 3:28pm local time.

Now

Clear
Temp: 73°F23°C
Wind: 8 MPH13 KPH
Precipitation: None

Today

Next 2 hours: No

Next 4 hours: No

Next 8 hours: No

Tomorrow

Yes

Clear throughout the day.
Low of 55°F13°C, High of 78°F26°C
Wind: 7 MPH11 KPH
Precipitation: 1% rain