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 McAllen, TX 78504, USA as of June 1, 2020 2:43pm local time.

Now

Humid and Partly Cloudy
Temp: 84°F29°C
Wind: 8 MPH13 KPH
Precipitation: None

Today

Next 2 hours: Yes

Next 4 hours: Yes

Next 8 hours: Yes

Tomorrow

No

Humid throughout the day.
Low of 71°F22°C, High of 88°F31°C
Wind: 7 MPH12 KPH
Precipitation: 40% rain