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 Lykens, PA, USA as of June 1, 2020 3:54pm local time.

Now

Clear
Temp: 70°F21°C
Wind: 10 MPH16 KPH
Precipitation: None

Today

Next 2 hours: No

Next 4 hours: No

Next 8 hours: Yes

Tomorrow

Yes

Overcast throughout the day.
Low of 52°F11°C, High of 69°F21°C
Wind: 5 MPH8 KPH
Precipitation: 30% rain