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 Mexico as of May 25, 2020 9:00am local time.

Now

Clear
Temp: 61°F16°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 52°F11°C, High of 88°F31°C
Wind: 8 MPH12 KPH
Precipitation: 3% rain